Wednesday, June 3, 2009

White Gold and Diamond Bracelet



White Gold and Diamond Bracelet
Item Details
18 Carat White Gold Bracelet with 16.76 Carats Princess Cut Diamonds
Diamond Specifics

Item Number: 69/740

Colour: F colour

Clarity: if

Weight: 16.76ct

View larger image

Read our diamond guide
Description

They say that body language makes more of an impact than the words you choose. Make sure that no one mistakes you with this inspired 16.76 carat princess cut diamond bracelet in 18 carat white gold from Hancocks. Come in today and let us help you make your message loud and clear.

View more Bracelets

Contact us about this item

Book appointment

Email this page to a friend

Curve bangle in sterling silver



Item Details
Diamond Specifics

Item Number: GJ001

View larger image

Read our diamond guide
Description

The CURVE bangle in sterling silver comes in 2 sizes: S/M (52 x 66 cm) and M/L (58 x 72 cm). Designed by Regitze Overgaard.

View more Georg Jensen

Contact us about this item

Book appointment

Email this page to a friend

Platinum Diamond Ring


Platinum Diamond Ring
Item Details
3.01 Carat Marquise Cut Diamond Ring set in Platinum
Diamond Specifics

Item Number: 2/969

Colour: D colour

Clarity: vs1

Weight: 3.01ct

View ring in 3D

View larger image

Read our diamond guide
Description

Diamonds were once believed to possess magical powers. This marquise cut diamond ring will certainly cast a spell over you and all those around you. With its persuasive 3.01 carats, it will be your lucky charm. Hancocks believes every woman needs a trick or two. Come in and find your magic wand.

View more Rings

18 Carat White Gold Three Row Ring



Item Details
18 Carat White Gold Ring with 3.31 Carats Pave Set Diamonds in Three Rows
Diamond Specifics

Item Number: 110/973

Colour: F colour

Clarity: vs1

Weight: 3.31ct

View larger image

Read our diamond guide
Description

Sometimes the most beautiful songs are sung without a single word. Let this three row pave set diamond ring with 3.31 carats be the melody that carries you through. At Hancocks Jewellers, we truly believe that seeing this ring on your finger will be the high note of your every day. Come in and feel the music.

View more Rings

VICE 386 in steel with 24 diamonds, total 0,06 ct


VICE 386 in steel with 24 diamonds, total 0,06 ct
Item Details
Diamond Specifics

Item Number: GJ061

View larger image

Read our diamond guide
Description

The VICE collection, created by Swiss designer Nicolas Barth Nussbaumer, combines the classic strength utility and functionality of a steel bracelet watch with the design elegance and simplicity of Georg Jensen's design language. "The VICE watch's bezel and back case lock the body of the watch in a tight embrace - a vice like position. The steel bracelet also emulates this form giving the watch a sturdy, powerful appearance" explains Nussbaumer. The aesthetic appeal of the watch lies in the small details of the watch face. The minute markings are embedded within a sub-layer of the face while the hours illuminate in silver. The dial of the VICE watch is available in both black and silver versions. The date is displayed at 3 o'clock and the watch is water resistant to 10ATM. The steel bracelet is secured using a butterfly-lock. The VICE collection has been created for men and women and available in both a 40mm and 34mm version. Quartz Movement: ETA 955.412

18 Carat Yellow and White Gold Ruby and Diamond Necklace


18 Carat Yellow and White Gold Ruby and Diamond Necklace
Item Details
18 Carat White and Yellow Gold Necklet with 22.51 Carats Rubies and 4.48 Carats Diamonds
Diamond Specifics

Item Number: 52/153

Weight: 4.48ct

View larger image

Read our diamond guide
Description

Can daring be elegant? Can bold be beautiful? Opposites truly attract on this stunning ruby and diamond necklet. Set in 18 carat white and yellow gold, the seductive rubies and innocent diamonds come together in the wonderful complexity that is a woman. At Hancocks Jewellers we believe there are no limits to what you are, what you can be and what you want to be. No matter which woman you are today, we have the perfect jewels for you.

View more Necklaces

Contact us about this item

Book appointment

Mobius large brooch in sterling silver



Mobius large brooch in sterling silver
Item Details
Diamond Specifics

Item Number: GJ011

View larger image

Read our diamond guide
Description

The MOBIUS brooch in sterling silver is available in two sizes, i.e. small and large. This brooch in sized 65mm x 55mm. Designed by Vivianna Torun B?low-H?be.

View more Georg Jensen

Contact us about this item

Book appointment

Email this page to a friend

White Diamond Jewellery

White diamond jewellery is a way to say so clearly “you’re important to me”. It’s the natural choice of many people who want to express this feeling with something that will last – forever. And Hancocks Jewellers with a wealth of experience, knowledge and jeweller’s craftsmanship is the jeweller to which they naturally turn. We have been creating and crafting diamond jewellery for generation after generation, for customers who treasure the pieces that we make for them.

Fine jewellery and diamond jewellery in particular are what motivates us as jewellers to make the very best for customers who demand the very best. Our commitment to value, quality and beauty is demonstrated in the superb range of white diamond jewellery that we offer. From diamond rings, bracelets and bangles, through to diamond earrings, necklaces and pendants, our white diamond jewellery creations light up the room and make natural beauty transcendental.

Come rain or shine, it’ll always be a beautiful day with white diamond jewellery from Hancocks Jewellers. And you can decide what sort of brilliant, natural light should liven up your world, by choosing from a wide range of superior quality fine jewellery, with stones, cuts and settings for every occasion.

You’ll find brilliant, princess, emerald and cushion-shaped cuts of diamonds, as well as heart-shaped, marquise, pear and ascher cuts. As jeweller craftspeople with a nation-wide reputation for excellence and value in our white diamond jewellery, we make the mastery of our art available in a wide variety of delightful pieces. And while our proud tradition in diamond jewellery continues from year to year, we also blend in contemporary design with the goal of crafting even more original and valuable pieces that will still have timeless beauty as well.

Detailed descriptions on how to buy white diamond jewellery and diamond rings are available in our on-line buyers guide. We’d also highly recommend that you come to Hancock Jewellers showrooms and discuss your particular interests in diamond jewellery with our showroom fine jewellery consultants. You’ll be assured of a warm welcome from people who are experts in white diamond jewellery and who are delighted to share the same passion as you for diamond jewellery.

Our diamond jewellery consultants will be able to answer all your questions and to comment on the buyers guide as it applies in your particular case. Although more general information and principles can go a long way towards helping you decide on the white diamond jewellery that you would like to own, discussing your requirements with an expert face to face often makes a significant difference.

So if you’d like more light in your life, visit this page to see detail on descriptions and photos of many exquisite and exclusive pieces of white diamond jewellery from Hancocks Jewellers. Then come and see us in our showrooms and experience for yourself the enchantment of diamonds and white diamond jewellery as it “comes to life” before your very eyes.

Tuesday, June 2, 2009

Indian Head Gold Coins


Indian Head gold coins can command a very high price due to their rarity provided they are in fgood condition. They were only minted from 1907 to 1933 and the total minted was less than a single year's mintage of the Morgan Silver Dollar so there is not that many of them.

President 'Teddy' Roosevelt wanted to create a new gold coin for the US and contracted the famous sculptor, Augustus Saint-Gaudens to create the Indian Head gold coin. Saint-Gaudens basically sketched the design for the coin on a napkin and passed the design to German-born Adolph A. Weinman, better known to collectors today for his 'Mercury' Dime and Walking Liberty Half Dollar.

The great sculptor used the 'Miss Libert' profile, adding a feathered Indian headdress and stars to represent the States. On the reverse of the ten dollar gold coin was an eagle perched on a collection of arrows.

This coin is now much sought after for its rarity, unusual design and history by collectors.

The coin weight is 16.718 grams with .900 fine gold. It has raised stars and the net weight of pure gold is .48375 troy ounce.

Rare dates to look for are: 1920-S, 1930-S, and 1933. Scarce dates to watch out for are: 1908-S, 1911-D, 1911-S, 1913-S

In 1908 Roosevelt commissioned a new five dollar Indian Head gold coin and this was a most unusual coin in that the designer, Bela Lyon Pratt, designed the coin with the head incuse, which is to say, the sculptured head is not raised above the surface, as with most coins, but sunken below it. Again, very few of these coins were minted from 1908 to 1915 when production ceased for ten years before resuming again. In 1929 the stock market crash, bringing the depression, halted production of the five dollars coin forever and there has been no further production since.

This makes the five dollar Indian Head gold coin one of the rarest and most sought after coins ever made.

The five dollar Indian Head gold coin contains half the gold content of a ten dollar gold piece.

As well as being an absorbing pastime if somewhat expensive, collecting Indian Head gold coins are an excellent investment and the rewards will inevitably outweigh the costs in the long term.

Welcome to The Currency House Online

We specialize in high denomination notes! We also stock other US currency such as Nationals, Silver certificates and large size type notes. Click on the menu pages to the left to view our inventory. Thinking of selling? We are buying all U.S. paper money!! Give us a call or send us an email.

We inventory a broad based selection of $500 and $1000 Federal Reserve notes where there's something for everyone. We also carry Gold Certificates and ultra-high denomination notes, that is $5,000 and $10,000 notes. We provide customers with quality notes, fair pricing and superior service. So whether you're a collector on a budget, or the investor who wants "only the best," we offer you the guidance and buying experience that will keep you coming back.

We pride ourselves at being the best in what we do. We travel the country from coast to coast attending conventions, auctions and acquiring notes from private collections, so that we can offer you the best selection of high denomination notes. Our reputation speaks for itself, give us a try and you'll be convinced.

Unlike other U.S. paper money, all high denomination notes listed on this site still carry legal tender status and are redeemable for face value at any bank!!

Checkout the History of these notes by clicking in the menu to the left. Enjoy, and thanks for visiting!!

We are always buying to add notes to our inventory. Top dollar paid for your collection!

Emerging Markets

GM Plans to Sell Hummer to China's Tengzhong, Saving More Than 3,000 Jobs General Motors Corp., seeking to shed assets to emerge from bankruptcy, agreed to sell the Hummer sport-utility vehicle brand to China’s Sichuan Tengzhong Heavy Industrial Machinery Co.

Indonesia Lowers Benchmark Interest Rate to 7% to Support Economic Growth Indonesia’s central bank cut its benchmark interest rate for a seventh straight month to help bolster Southeast Asia’s fastest-growing economy.

Gucci, Other Designers Seek $4 Million in Sanctions Against Bank of China Gucci America Inc., the luxury company that is owned by Paris-based PPR SA, asked a U.S. judge to hold Bank of China Ltd. in contempt for failing to turn over documents and to order it to pay $4 million.

Barclays Rally May End After Abu Dhabi Investors Sell $5.7 Billion Stake Barclays Plc’s rally may be coming to an end after the bank’s Abu Dhabi investors took advantage of a sixfold increase in the stock to sell part of their stake for a 1.46 billion-pound ($2.42 billion) profit.

Grupo Mexico Told to Put $8.8 Billion Stock in Escrow During Court Appeal Grupo Mexico SAB, Mexico’s largest mining company, was ordered by a U.S. judge to put into escrow $8.84 billion worth of stock in its Southern Copper Corp. while it appeals a decision it lost in a Texas court.

China Stocks Have Rallied Back to 'Bubble Territory,' Economist Xie Says China’s stocks have rallied into “bubble territory” and investors betting on the country to rescue the global economy from recession are misguided, said Andy Xie, former chief Asian economist at Morgan Stanley.

Russian Shares Downgraded to `Underweight' at Citigroup After Market Rally Russian stocks, the world’s second- best performers this year, were downgraded to “underweight” from “overweight” at Citigroup Inc. as a “huge run” in prices made valuations less attractive amid economic weakness.

Best Buy for Gold Bullion Coins


Definitely one of the best buys for gold bullion coins is the 99.99 percent one ounce gold coins.

The most popular of these are the American Gold Eagle, the Canadian Gold Maple Leaf and the South African Krugerrand.

All these coins contain 1 ounce of gold and are over 90.00 percent fine.

It should be noted that, whereas the Gold Maple Leaf is 24 karat gold, the gold eagle and the Krugerrand are only 22 karat gold. This means it is alloyed with another metal, usually silver and or copper, to increase it’s hardness and durability. Despite this the popularity of the gold eagle and Krugerrand have never waned.

For new coin collectors and investors, these coins make a great start to a collection.

All these coins are easily transported, stored and can be sold quickly if required. They are accepted in all countries and are all legal forms of currency in their own country.

Current prices for these gold coins are in the 600 to 620 US dollar range but the price will vary as the price of gold varies.

When you buy such coins you will always find the dealer has added his own mark up to the price as well as shipping and, if requested, insurance.

Always ensure that when you buy gold coins from a dealer that you select a reputable dealer and that the coins come appropriately sealed and with a certificate.

For a new collector, the best buy for gold bullion coins is the top three, American Gold Eagles, Canadian Gold Maple Leaf and South African Krugerrands, and these will give hours of enjoyment and pleasure to young and old alike.

7:11 PM

Gold Gains on Weak Dollar; Silver Reaches Highest Since August

By Jason Scott

June 3 (Bloomberg) -- Gold advanced in Asia as dollar weakness increased the metal’s appeal as an alternative to U.S. currency-denominated assets. Silver climbed to the highest in almost 10 months.

Bullion extended yesterday’s gain after the dollar dropped to the lowest since Dec. 18 against a basket of six major currencies. The dollar declined for a second day against the yen on concern nations are considering alternatives to the world’s main reserve currency, spurring investors to sell the greenback.

“With the inverse relationship between gold and the buck back in vogue and the year’s steepest monthly dollar decline in May, gold prices are poised to attack the psychological $1,000 level this week,” said Ralph Preston, a Heritage West commodity analyst in San Diego.

Gold for immediate delivery gained 0.5 percent to $986.52 an ounce at 1:45 p.m. in Singapore. Silver jumped 1.1 percent to $16.135 an ounce, extending yesterday’s 2.4 percent rise. The metal earlier reached $16.20, the highest since Aug. 8.

Silver has outpaced gold this year. An ounce of gold now buys about 61 ounces of silver, down from a peak of 84.4 ounces on Oct. 10.

Gold holdings in the SPDR Gold Trust, the biggest exchange- traded fund backed by bullion, were unchanged at a record 1,134.03 metric tons yesterday. The fund’s holdings have increased 45 percent this year.

Gold for August delivery, the most-active contract on the Comex division of the New York Mercantile Exchange, added 0.3 percent to $987.70. The contract reached $990.20 on June 1, the highest since Feb. 24.

Economic Outlook

U.S. business activity contracted at a faster pace than forecast in May, according to the Institute for Supply Management-Chicago Inc. That dented investor speculation that the first simultaneous recessions in the U.S., Europe and Japan since World War II may be ending.

“The crisis will continue on balance to be good for gold as long as it leads to a positive environment for investment demand,” GFMS Chairman Philip Klapwijk said. “It is the case at the moment and will continue to be the case over the rest of 2009.”

Among other precious metals for immediate delivery, platinum rose as much as 0.5 percent to $1,254.75 an ounce, the highest intraday price since Sept. 23, before trading at $1,252.50 at 1:43 p.m. Singapore time. Palladium gained 0.1 percent to $251 an ounce.

OUR SERVICES

GoldSilverTrends is an informational service of forecasting/predicting Gold and Silver movement on a day trade position/swing trade basis.

Predictions made are based upon research & analysis carried on by our expert team, which are expected to be quite unbelievably and deemed to be reliable.

We predict daily trends of Gold and Silver as well as the trends for the next 3-7 days. We will also guide you when to buy/sell & will help you in maximizing your profits.


Our prediction system is unique, and our main goal is to keep you on the right path of the trends in the market by teaching you the right manner of trading or how to make the best use of the time. The Trader who makes the right trade at right time can only get success in trading. Always, make the best use of the time.

Money is very important so Always trade safely.

Our Subscription Rates are astonishingly affordable & economical. Kindly check the subscription page for details. Once you subscribe with us you will start receiving predictions/forecasts for Gold and Silver by Login into your account. We believe, once you try our services you'll definitely appreciate.

Benefits you will get

1. Our services provide the latest updates of the market as to What is happening and will happen instead of what had happened.

2. You can see the latest news each time which can affect the market.

3. Our motive is to make your trading life simpler by helping you in protecting your capital.

4. Once you give us the opportunity to serve you your all trading queries, news, problems will be solved.

5. Our predictions are unbelievably accurate which helps in maximizing your profits.

6. We will help you in developing your own ways of trading and how to trade in disciplined manner.

7. The key of gaining confidence in trading is the awareness and education, which we will give you.

8. Time is the key factor in any Business. The trader who trade at the right time called as successor but the one who losses his time called as looser. We will teach you the right manner of trading and how to make best use of the time.

9. In every field a new beginner needs a highly skilled and specialized guideline. In Commodity Trading we are the best needed guidance for every individual by saving him from overtrading.

10. Money is very important so trade safe.





Support more info...

The Properties of Gold

Gold is a very rare substance making up only five ten-millionths of the Earth's outer layer. (Imagine 10 million Smarties in one place and only 5 of them were made of gold!). Its rarity and its physical properties have made it one of the most prized of Earth's natural resources.

Gold, like iron, copper, lead, tin etc. is a metal. Metals are good conductors of heat and electricity and are almost all solid at room temperature (with the exception of mercury). They are malleable and ductile.

Gold is heavy - it weighs over nineteen times more than water, and is almost twice as heavy as lead. If you had enough Gold to fill a one litre milk carton, it would weigh 19.3 kilograms, the same volume of milk weighs only one kilogram.

Gold is quite soft. It is slightly harder than a fingernail but not as hard as a coin or glass.

Gold, like most metals, can be hammered into thin sheets (malleable) or drawn out into thin wires (ductile). This has made gold sought after for a wide range of applications, like jewellery and in electronics. "Gold leaf" for example, is gold that has been beaten into a sheet less than one tenth of a millimetre thick. It is then used for lettering on honour rolls in schools, or for putting gold onto picture frames and ornaments
The Properties of Gold
Chemical Symbol: Au
Mineral: usually found as a native metal
Relative density: 19.3
Hardness: 2.5-3 on Mohs scale
Malleability: High
Ductility: High
Melting point: 1060°C
Boiling point: 2660°C
Atomic Mass: 196.97

NEXT: Read about Gold in Australia, or Start the Quiz!
Minerals Downunder Exploration Contents

WELCOME TO GOLD SILVER TRENDS

GoldSilverTrends is an informational service of forecasting/predicting Various Commodity Items. We Predict Trend on a day trade basis & position/swing trade basis.

Currently we are predicting 3 Items:
Gold, Silver & Copper.

Predictions made are based upon research & analysis carried on by our expert team, which are expected to be quite unbelievably accurate and deemed to be reliable.

We predict daily trend of Gold, Silver & Copper as well as trend for next 3-7 days. We will also guide you when to buy/sell & will help you in maximizing your profits.

Our prediction system is unique, and our main goal is to keep you on the right side of the trend in the market by teaching you the right manner of trading or how to make best use of the time. Trader who make right trade at right time only get success in trading. Always, make best use of the time.

Money is very important. Always trade safely.

Our Subscription Rates are pretty economical. Kindly check subscription page for details. Once you subscribe with us you will start receiving predictions/forecasts. We believe, once you try our service you'll definitely be back.

Gold
Silver
Copper

Gold
Support

Resistance
972.1

988.8
962.6

996
955.4

1005

Silver
Support

Resistance
15.61

16.16
15.26

16.36
15.06

16.71

Copper
Support

Resistance
02.27

02.33
02.25

02.36
02.21

02.39
Support more info...

Currency

Currency Converter

Calander

World Economic Calendar

Intrest Rates

Borates

Rio Tinto Minerals supplies nearly half the global demand for refined borates, the key ingredient in fiberglass, glass, ceramics, fertilizers, wood preservatives and hundred of other products.

Rio Tinto Minerals, through Rio Tinto Borax, operates California's largest open pit mine in Boron, California - one of the richest borate deposits on the planet. The company supplies nearly half the world's demand for refined borates, minerals essential to life and modern living.

Rio Tinto Borax traces its roots to California's Death Valley, where borate deposits were discovered in 1872. The twenty mule teams Borax used to haul ore out of the remote desert live on as a symbol of the company's commitment to innovation.

Today, Rio Tinto Minerals is acknowledged as the world leader in borate technology, research and development.

Rio Tinto Minerals operations are located in Boron, California and in Argentina's Salta province.

1. Borax Argentina, South America
2. Boron Mine, North America

For more information about Rio Tinto's operations, visit Our operations.

Gold and silver

Gold and silver are two of the world's most well known precious metals. Gold and silver produced by Rio Tinto are sold to fabricators, who use the metals in manufacturing. Some gold also goes to investors such as large banks and gold traders.

How gold and silver is produced
Gold and silver is extracted as impurities during the final stage of refining copper. More information about this process can be found in the product page for copper.

In this final stage of the refining process, copper ends up in large, thick plates called copper anodes, which are 99.6 per cent pure copper. The anodes are put through one last process at the refinery where they are lowered into an acid solution just inches away from the cathodes at each side. An electric current runs through the plates, causing the copper ions to migrate from the anode to the cathode, while all other impurities - including gold and silver - drop off into the solution and settle to the bottom.

This residue is then collected and taken to the precious metals plant where a series of chemical processes is used to separate the gold and silver.

Uses for gold
Gold is used for jewellery more than any other industrial application. It is also used in electronics as it is an excellent conductor and does not corrode or tarnish, making it highly reliable for printed circuitry and electrical devices. Gold is also used in dentistry as fillings and tooth restoration. As gold has an excellent ability to reflect light, it is used in glass manufacturing.

Other uses for gold include: medicine, aerospace, the arts, porcelain dinnerware, decorations in architecture, medallions, coins, and gold bars purchased as investments.

Uses for silver
Silver is used primarily in photography, in the development of film and photographs. Silver is the best known conductor of electricity, hence is widely used in electrical contacts and switches.

Other uses for silver include: chemistry, jewellery, mirrors, silver plating, dental supplies, sterling silverware, medallions, catalysts in manufacturing, medical and scientific equipment, magnet windings, brazing alloys, and solder.

More information about Rio Tinto's silver and gold operations in North America can be found at the Kennecott Utah Copper website. For more information on our other products, see our corporate fact sheets.

Gold and silver

Gold and silver are produced primarily as by products of Rio Tinto's copper operations, often extracted as impurities in the final stage of refining copper.

Rio Tinto's gold and silver interests are located at Kennecott Minerals and Kennecott Utah Copper in the USA, and at our joint ventures at Escondida (Chile), Grasberg (Indonesia) and Northparkes (Australia).

Kennecott Utah Copper produces about 400,000 troy ounces of gold per year, with a purity of 99.99 per cent and three million troy ounces of silver per year, with a purity of 99.9 per cent.

1. Barneys Canyon, North America (Gold)
2. Bingham Canyon, North America (Gold and silver)
3. Cortez/Pipeline, North America (Gold)
4. Escondida, South America (Gold and silver)
5. Grasberg, Indonesia (Gold and silver)
6. Greens Creek, North America (Gold and silver)
7. Northparkes, Australia (Gold)
8. Rawhide, North America (Gold)

For more information about the Rio Tinto's gold and silver operations, visit Our operations.

Diamonds

Gem diamonds share the podium with gold as a luxury commodity, principally in diamond rings to mark engagements and the special anniversaries of life, and in jewellery. Industrial diamonds have an important role as abrasives in sanding discs, circular saws and other machining processes.

Rio Tinto has established a firm base for growth in the world diamond industry by creating a market niche for smaller gems. This is an example of how customer focus has added value through the company working with buyers to give buyers the products they want.

1. Argyle, Australia
2. Diavik, North America
3. Murowa, Africa

Our diamond sales offices are located in Antwerp, Belgium and Mumbai, India.

For more information about the Rio Tinto's diamond operations, visit Our operations.

Iron ore exploration target at Corumba, Brazil



An exploration target has been identified at Rio Tinto's Corumbá iron ore mine.
Exploration Target Tonnage Range (millions) %Fe %AI2O3 %P %SiO2
Corumbá Jaspilite 8,000 to 10,000 52-55

0.4-0.5
0.04-0.06 17-22

The exploration target consists of a large deposit of banded iron formation, locally known as "jaspilite", directly beneath the Corumbá open cut mining operation. Corumbá currently produces approximately 2 million tonnes per annum of high grade lump product from the enriched capping on top of the jaspilite.

Location and Title

The Corumbá operation is 100% owned by Rio Tinto and is close to the border with Bolivia, approximately 1,500 kilometres from the coast of Brazil.
Summary of Exploration Results

The exploration target is based on 18 diamond and reverse circulation drill holes to 100m vertical depth, 256 reverse circulation holes to between 30 and 70 metres depth, surface pits and detailed geological mapping. Over 1,500 samples have been analysed. Three deeper diamond drill holes confirm that the jaspilite exceeds 300 metres in thickness. The tonnage potential is fully enclosed by mining leases owned by Rio Tinto.

Laboratory test work indicates that the jaspilite can be upgraded by simple crushing, screening and density separation methods. The concentrate grade ranges from 60 to 62%Fe, 0.4-0.5%Al2O3, 0.04-0.06%P and 9-12%SiO2 with a granulometry similar to sinter fines. If the laboratory tests can be replicated at a production scale, the concentrate has potential for use as a separate product or for blending with high-alumina ores worldwide

3 D model showing "jaspilite" Exploration Target

The exploration target being reported under Section 18 of the JORC Code is based on assessments of prospects within Rio Tinto's Corumbá project mine concessions which are supported by drilling, geophysics, sampling, detailed geological mapping and modelling undertaken over the last ten years. However, the potential quantity and grade is conceptual in nature with insufficient exploration to define a Mineral Resource and it is uncertain if further studies will result in a Mineral Resource.

CP Statement

The information in this presentation that relates to Exploration Results is based on information compiled by João Carlos Möller who has extensive experience in valuations of iron ore operations in Brazil and has been a member of The Australian Institute of Mining and Metallurgy (AusIMM) since 1998. João Carlos Möller is a full-time consultant for Rio Tinto and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. João Carlos Möller consents to the inclusion in the presentation of the matters based on his information in the form and context in which it appears.

Graduated Tahitian Cultured Pearl Strand with 18k White Gold (9.0-11.5mm) 18" Long


These naturally black pearls feature hints of bronze, pink, and green. Pearls graduate in size from 9 mm near the clasp to 11.5 mm at the center. Necklace is secured with a gently ridged 18k white gold safety clasp.
4.3 Customer Feedback
Average Rating
4.33





3
2
1
0
0
Total Reviews
6

Order now for free delivery on Thursday, June 4.
Price: $5,000


Email To A FriendPrint
Adding item to your wishlist...


Close
view wish list
Similar
Print
Sending your e-mail...
Close
To: *
Enter up to five e-mail addresses, separated by commas.
Message:
Limit: 250 characters
Your Name: *

Your E-mail Address: *

Receive special offers and gift ideas from Blue Nile
Send me a copy of this e-mail.
* Required Field
Your e-mail will only be used to indicate who this e-mail is from unless you choose to receive special offers and gift ideas from Blue Nile above.
Close
Send To A Friend
Product Details
Product Details
Necklace Information
Stock number: 4701
Metal: 18k white gold
Clasp: Box clasp with safety
Chain length: 18 inches
Rhodium: Yes
Pearl Information
Tahitian pearl minimum color: Grey-black
Luster: High to medium
Shape: All round to mostly round
Uniformity: Excellent to good
Surface markings: Lightly spotted
Graduated size: 9 mm - 11.5mm
Setting type: Pearl knot

Inferred Mineral Resource at La Granja, Peru


An extensive drilling programme at La Granja, Peru spanning 18 months and some 46,000 metres has led to the estimate, in accordance with the JORC Code, of 2.8 billion tonnes of Inferred Mineral Resources grading 0.51 per cent copper and 0.1 per cent zinc representing a copper equivalent grade of 0.56 per cent at a copper equivalent cut-off of 0.3 per cent.

Resource Category M tonnes Cu % Zn % Cu Equiv %
Interpolated Inferred 2,770 0.51 0.1 0.56

Rio Tinto Copper Group chief executive Bret Clayton said the results show La Granja to be one of the largest undeveloped copper projects in Latin America, with potential for further mineralisation with another 39,000 metres of drilling planned through to 2009.

"We're confident our aggressive exploration program will identify further mineralisation as the deposit remains open to the west and at depth. There are also possibilities for underground mining of deeper higher-grade zones," Mr Clayton said.

Deposit Location
La Granja is in the district of Querocoto, province of Chota, in the Department of Cajamarca, Peru. It lies in mountainous terrain in the Andes, at an elevation from 2000 to 2800 metres, with moderately high rainfall. The area is largely de-forested, with subsistence agriculture on flatter slopes. Access to the site by road or by helicopter is generally via the city of Chiclayo on the Pacific coast.

Location Map
La Granja ownership and history
The 3,900 ha La Granja mining lease is held by Rio Tinto Minera Perú Limitada SAC (Rio Tinto-La Granja), a wholly-owned subsidiary of Rio Tinto. It was acquired from the Peruvian Government through a privatization process in late 2005, along with most of the data from the previous investigations. The title will be maintained subject to an annual fee, completion of a Feasibility Study before February 2011, and implementation of a mine within 6 years of approval of the Feasibility Study by the Peruvian Government. Rio Tinto Exploration also holds exploration leases around La Granja, and is conducting an extensive exploration programme.

The mining lease was previously held by BHP Billiton (BHPB), which in 2001 drilled a total of 1947 metres in nine holes. Indicated Mineral Resources were reported as 1,984 million tonnes at a copper grade of 0.57 per cent, given a copper cut-off of 0.3 per cent. BHPB decided not to proceed with the project, and relinquished it to the government.

BHPB had purchased the project from Cambior Inc., which completed most of its exploration in the mid 1990s. Cambior supplied a drilling database of 113,310 metres in 355 holes including a small amount of drilling from previous explorers, a Joint Venture (JV) between the German and Peruvian Governments in the 1970s. The JV data has not been verified and consequently is not used for Rio Tinto's Mineral Resource estimation.

In 2006 Rio Tinto completed an Order-of-Magnitude Study based on the old data and commenced its programme of geological investigation. To date it has drilled approximately 46,000 metres in 70 holes, re-logged and re-assayed old sample material, twin-drilled several old holes, and completed geophysical surveys and geological mapping. The current Pre-feasibility Study is considering options around a conventional open pit with heap leach processing and SXEW production of both copper and zinc as high-purity cathode.

La Granja Geology
The La Granja deposit is an Andean porphyry copper deposit with associated mineralized breccias and skarns. The main intrusives are dacite porphyry, which with the breccias form irregular diatremes in the country rocks. The principal country rocks are impure limestones, siltstones and quartzites with some earlier diorite intrusions. The mineralising process and dacite emplacement metamorphosed limestones to skarns, formed the breccias and created the hypogene mineral and alteration assemblages. Subsequent supergene processes developed secondary mineral assemblages which have been shortened by erosion in many places. Leaching test-work indicates that all of these mineralization types yield acceptable metallurgical recoveries.

Minor Elements
Minor potential by-product elements include silver and molybdenum. Studies are in progress to determine their significance. La Granja contains many of the normal deleterious elements associated with Andean copper deposits including low amounts of mercury (0.5ppm average mainly restricted to isolated epithermal veins) and arsenic. Average arsenic levels are 300ppm in the upper weathered profile mainly adsorbed on to iron oxides; and an average of 200pm in the underlying hypogene zones occurring dominantly within enargite, a copper, iron, arsenic sulphide mineral. Environmental water monitoring does not indicate that arsenic is being leached and entering the environment to any level of concern.

Estimation
Copper Estimation used Leached, Supergene, Mixed and Hypogene domains, with no apparent need for domains based on lithology. Ordinary Kriging used a horizontal search radius of 300m, a vertical radius of 150m, and required at least one 15m down-hole composite in at least 4 octants, at least 8 composites overall, and a maximum of 5 composites per hole for an estimate. Zinc estimation used top-cutting to reduce the influence of sporadic high grades.

To classify the Inferred Mineral Resources as Interpolated or Extrapolated, a "Base of Interpolated" DTM surface was created from the lowest samples in the holes which reach lowest in the deposit. At peripheral holes, the surface was extended vertically upwards to create a wall to assign the enclosed rock as Interpolated, with rock outside being assigned as Extrapolated. Generally, the surface is downwards convex, except where gaps in the drilling grid could mean that rock lies further than 300m (the Variogramme range) from the nearest sample. Here, the surface has re-entrant angles so that this rock was assigned as Extrapolated. The surface is subject to manual interpretation, but it is considered that the relatively restricted Interpolation boundary more than compensates for the minor quantities of rock that may be of questionable assignment.

Summary of Metallurgical Studies
Testwork is progressing through successive stages of column leaching on ore samples (up to one tonne scale) across the various lithologies and anticipated mine outputs onto heaps. A larger scale facility enabling 500 tonne scale testing has been designed, and is currently passing through necessary approvals for construction.

Rio Tinto's proprietary approach to heap leaching has enabled high recoveries of copper and zinc, with very low reagent consumption and positive water balance, including on skarn ores. Final recoveries in all completed column tests of heap leaching have been in the range of 70 to 90 per cent (These recoveries must still be modified for anticipated industrial practice in large scale heap leaching configurations, but are reflective of the effectiveness of the approach taken to leaching of copper from even primary materials).

In the heap leaching process arsenic deportment is easily controlled, and has not represented any significant issues.

Further Potential
Rio Tinto's step-out 400m grid drilling shows that the mineralised system remains open at depth and especially to the west. A recent hole drilled to the west of the Inferred Resource reported here has identified a new porphyry centre that appears connected to the known deposit by a mineralized skarn. This new porphyry, known as Mirador, is within Rio Tinto's mining and exploration leases and will be further investigated by follow-up drilling.

Rio Tinto believes that there is significant potential to outline additional copper mineralisation and add to the La Granja resource base once further exploration is undertaken within its lease area. However, it is uncertain if further exploration will result in the determination of a Mineral Resource.

CP Statement
The information in this report that relates to Mineral Resources is based on information compiled by Mark Howson who is a Member of the Institute of Materials, Minerals & Mining. Mark is a full-time employee of Rio Tinto Technology & Innovation and has experience which is relevant to the style of mineralization and type of deposit under consideration and to the activity which they have undertaken to qualify as a Competent Person as defined in the 2004 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mark Howson consents to the matters based on his information in the form and context in which it appears.

Diamond Grading | Cut


Many people confuse cut with the shape of a diamond. Most diamonds are cut round with a full 58 facets, and a good cut, or make, has more scintillation, more sparkle. The shape of the diamond, however, is largely a matter of personal preference and does not directly affect the value.

It is the work of a master cutter that allows the diamond to be cut in such a way as to permit the maximum amount of light to be reflected through the diamond, and that's a great reflection on you. It is the cut that enables a diamond to make the best use of light.

The Kohinoor Diamond


According to some sources, the Koh-i-noor diamond was found in the Godavari river in central India 4,000 years ago. Tradition associated with it states that its owner will rule the world, but that to possess it is dangerous for any but a woman. This may have been a delicate piece of flattery to Queen Victoria, who once owned the gem.
The authentic history of this jewel begins in the 14 c. when it was reported to be in the possession of the rajas of Malwa. It later fell into the hands of Baber, who founded the Mogul dynasty in 1526. During the next two centuries the diamond was one of the most prized items in the treasure of the Mogul emperors.
In 1939, Nadir Shah of Persia invaded India and all of the treasures of the Moguls fell into his hands except the great diamond. Nadir Shah was told by one of the emperor's harem women that the stone was hidden in the emperor's turban. The conqueror then invited the conquered to a feast and offered to exchange turbans as a gesture of friendship. The emperor had no choice but to agree. Later, in the privacy of his tent, Nadir Shah unrolled the turban, the gem fell out, and Nadir is supposed to have exclaimed "Koh-i-noor", mountain of light.

The stone continued in the possession of the Persian dynasty, although many attempts were made to gain ownership of it. The Persian king was assassinated, and his son Shah Rukh, was deposed. In an effort to discover the whereabouts of the diamond Shah Rukh´s eyes were put out, and boiling pitch was poured on his head, but he refused steadfastly to reveal its hiding place. Later, a Persian king fled with it to the Sikh court, and Ranjit Singh, the Lion of the Punjab, took the stone and wore it as a decoration. It was later placed in the Lahore treasury. After the Sikh wars, it was taken by the East India Company as part of the indemnity levied in 1849, and was subsequently presented to Queen Victoria at a sparkling levee marking the company's 250th anniversary.
Weight: 108.93 carats
Cut: round brilliant cut diamond

The jewel was displayed at the Great Exhibition of 1851 where it was thought to display insufficient fire. It was decided to recut it from its original Indian form, and a member of the Amsterdam firm of Costar was called to London to cut the stone. A steam-driven cutting wheel was set up, and Prince Albert se the stone on the wheel, while the Duke of Wellington started it. The cutting took 38 days, but did not add much to the stone's brilliance. It was rather believed that the historical value of the diamond was diminished by the cutting. Queen Victoria continued to wear it as an ornament, then left it to Queen Alexandra, who wore it at Edward VII´s coronation. In 1911, the jewel was used in a crown made for Queen Mary, and in 1937, in another made to be worn by Queen Elizabeth at the coronation of her husband, King George VI in 1937. The Queen Mother's crown with the Koh-i-noor is in the Tower of London.

famous diamonds

Molybdenum exploration target at the Bingham Canyon mine, Utah, USA



Recent brownfield exploration at the Bingham Canyon mine has identified a new molybdenum exploration target beneath the current open pit.

Exploration target Tonnage Range (millions) Grade Range
Bingham Deep Moly 500 - 600 0.1 - 0.15% Mo


Diamond core drilling indicates a sub-vertical body of mineralisation extending at least 1000 metres below the floor of the pit. The average grade of molybdenum in the open pit reserve is 0.044 percent molybdenum while the grade of the material within the new exploration target is estimated to range from 0.1 to 0.15 percent molybdenum.

Location and Title

The new target lies within the footprint of the open pit and within patented mining claims owned by Kennecott Utah Copper. Kennecott and predecessor companies have been conducting large scale open pit mining at Bingham for more than 100 years.

Summary of Exploration Results

Sixteen diamond drill holes have intersected molybdenum mineralisation with assays available for 14 of the holes. Drilling suggests a steeply dipping arcuate body of >0.09 percent molybdenum mineralisation that appears to wrap around the barren core of the porphyry copper deposit in the northeast and southeast sectors of the deposit. There has not yet been any drilling directed at the deep molybdenum mineralisation in the northwest or southwest sectors of the deposit.

The molybdenum mineralisation locally reaches the surface on the eastern side of the pit bottom where it contributed to higher than average molybdenum head grades in the period 2004 through 2007. The mineralisation is mostly hosted by monzonite and occurs as quartz-molybdenite veinlets and as molybdenite disseminations or fracture fillings. Batch flotation testing of composite samples has indicated molybdenum recoveries of approximately 95 percent in rougher flotation, while preliminary testing indicates that the rougher concentrate can be upgraded readily by regrinding and cleaner flotation.
3D model showing molybdenum mineralisation extending beneath the Bingham Canyon mine




Hole


From (m)


To (m)


Interval (m)


%Mo

D548


905


1524


619


0.15

D557


491


1120


629


0.14

D563 Upper


698


789


91


0.14

D563 Lower


1119


1564


445


0.17

D581


210


553


343


0.12

D595


1038


1243


205


0.15

D599 Upper


533


565


32


0.40

D599 Lower


1097


1383


286


0.18

D604


243


595


352


0.10

D641 Upper


1275


1392


118


0.08

D641 Lower


1664


1707


43


0.10

D654


1


496


495


0.16

D657


887


1286


399


0.14

D660


816


1313


497


0.09

D662


757


1224


467


0.15


Table showing major intercepts

Exploration of the deep molybdenum mineralisation is part of on-going studies of future mine development options at Bingham. While it is likely that underground development could access both the deep molybdenum body and deep porphyry copper and skarn mineralisation, the feasibility of developing such a mine has not yet been established.

The potential quantity and grade of the molybdenum mineralisation is conceptual in nature. There has been insufficient drilling to define a Mineral Resource and it is not certain that further exploration will result in discovery of a Mineral Resource.

CP Statement

The information in this presentation that relates to Exploration Results is based on information compiled by Gerry Austin who is a member of the Australian Institute of Mining and Metallurgy (AusIMM). Gerry Austin is a full-time employee of Rio Tinto and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as a Competent Person as defined in the 2004 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Gerry Austin consents to the matters based on his information in the form and context in which it appears.

Sapphire Solitaire Pendant in 18k White Gold (5mm)


An elegant single, deep cool blue sapphire, perfectly complemented by an 18k white gold four-prong setting and suspended from an 18k white gold bail on a cable chain.
Order now for free delivery on Friday, June 5.
Price: $400


Email To A FriendPrint
Adding item to your wishlist...


Close
view wish list
Similar
Print
Sending your e-mail...
Close
To: *
Enter up to five e-mail addresses, separated by commas.
Message:
Limit: 250 characters
Your Name: *

Your E-mail Address: *

Receive special offers and gift ideas from Blue Nile
Send me a copy of this e-mail.
* Required Field
Your e-mail will only be used to indicate who this e-mail is from unless you choose to receive special offers and gift ideas from Blue Nile above.
Close
Send To A Friend
Product Details
Product Details
Necklace Information
Stock number: 6997
Metal: 18k white gold
Chain: Cable chain
Chain length: 18 inches
Length: 3/8 inch
Rhodium: Yes
Sapphire Information
Number of center round sapphires: 1
Minimum size: 4.9mm
Minimum color: Medium dark blue
Minimum clarity: Eye Clean
Setting type: Prong setting

Inferred Resource at Bunder diamond project, Madhya Pradesh, India




Inferred Resource at Bunder diamond project, Madhya Pradesh, India

Following the previously announced Exploration Target for the 17 hectare Atri lamproite pipe, Rio Tinto has completed an Order of Magnitude study which has identified an Inferred Resource.
Classification Million tonnes Carats per tonnes Million carats
Inferred Resource 37 0.7 27.4



Location and Title

The Bunder diamond project, located 500 kilometres southeast of Delhi, is wholly owned and operated by Rio Tinto through Rio Tinto Exploration India Limited. The Bunder pipes were discovered in 2004 as part of a reconnaissance exploration programme. A Prospecting License was granted in September 2006 allowing the start of an Order of Magnitude study. Rio Tinto announced the lodging of mining lease applications over the project in 2008.

Inferred Resource at Bunder diamond project, Madhya Pradesh, India

Following the previously announced Exploration Target for the 17 hectare Atri lamproite pipe, Rio Tinto has completed an Order of Magnitude study which has identified an Inferred Resource.
Classification Million tonnes Carats per tonnes Million carats
Inferred Resource 37 0.7 27.4



Location and Title

The Bunder diamond project, located 500 kilometres southeast of Delhi, is wholly owned and operated by Rio Tinto through Rio Tinto Exploration India Limited. The Bunder pipes were discovered in 2004 as part of a reconnaissance exploration programme. A Prospecting License was granted in September 2006 allowing the start of an Order of Magnitude study. Rio Tinto announced the lodging of mining lease applications over the project in 2008.


Location Map

Summary of Exploration Results

Rio Tinto has been actively exploring for diamonds in India since 2001 and has so far discovered over 40 lamproites and kimberlites in India.

The Bunder project includes a cluster of eight lamproite pipes hosted by flat-lying Proterozoic sedimentary rocks. Drilling and sampling has so far focussed on the Atri lamproite, two coalesced pipes with a surface area of 17 hectares. The pipe is exposed along its south-western margin but elsewhere is covered by up to 23 metres of colluvium.

The Order of Magnitude study indicated that the Atri pipe is amenable to conventional open pit mining and diamond processing technology. Capital and operating costs were estimated for a nominal production rate of 5 million tonnes per annum and support the classification of an Inferred Resource.

The geometry of the lamproite has been constrained by HQ and NQ drilling to depths of 400 metres below surface. Diamond grade is based on eleven large diameter (8 inch) core holes at 50 to 75 metre spacing up to 250m depth. Diamond price evaluation was from 320 carats recovered from a surface bulk sample and from an additional 90 carats recovered from large diameter drilling. Samples were processed using standard dense media separation techniques to recover commercially-sized stones (>0.85mm). The northern pipe at Atri does not currently contribute to the reported diamond resource.

CP Statement

The information in this press release that relates to Mineral Resources is based on information compiled by Richard Platell who is a member of the Australasian Institute of Mining and Metallurgy (AusIMM). Richard Platell is a full-time employee of Rio Tinto and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as a Competent Person as defined in the 2004 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Richard Platell consents to the inclusion in the press release of the matters based on his information in the form and context in which it appears.

Rio Tinto's Q3 Diamond Production Down 10%

Rio Tinto announced today that diamond production during the third quarter fell 10%, compared to the same quarter of last year.

Diamond production during the third quarter totaled 6,770,000 carats.
At its Australian Argyle diamond mine, output fell slightly in the third quarter, compared to the same quarter of last year. However, compared to the previous quarter, diamond production soared 56% due to improved feed grade and higher throughput.

“As the open pit approaches the end of its life and the (Argyle) diamond mine transitions to underground operation variability in feed grades and production rates will continue,” Rio Tinto said in a statement.

Third quarter production at the Diavik diamond mine was down 26% compared to the same quarter of 2007 and 8% lower compared to the previous quarter.
By: PolishedPrices

Diamond Market

There are fewer than 200 or so companies or people authorized to buy these rough diamonds from De Beers. These “sightholders” tend to meet in Antwerp, Israel, London, and New York. They trade under the organizations of “The Syndicate”, “Central Selling Organization”, “Diamond Trading Company”, “Antwerp World Diamond Center” where these sightholders will sit across from each other and haggle ( to argue in bargaining ) on the numerous rough, polished and industrial diamonds through a formal contract of a simple handshake with the words “Muzel” exchanged.

Diamonds are the most coveted of all precious gems, as is witnessed by the extremely high demand for them. While this has not always been the case, diamonds are nonetheless exquisite gems that go through a long, tedious refining process from the time they are pulled from the ground to when you see them in the jewelry store. And, while some of the mystique of diamonds may be gone -- they're just carbon, after all -- the diamond will likely continue to be a highly coveted jewel, because, well, "A Diamond is Forever."

World Diamond Market Is a Scam

The New York Times has an article today on the diamond market and how Russia is loading up on supply and waiting for the economy to recover.

I find the world diamond market fascinating because it’s almost completely rigged. If the free market had its way, diamonds would be insanely cheap.

The diamond market used to be controlled by De Beers. They’re the ones who run those “diamonds are forever” ads. (Sure they’re forever, all carbon is.) I believe that diamond rings are a wedding staple only in the United States. Lately, De Beers has fallen on hard times and Russia is taking over the market.

The recession also coincided with a settlement with European Union antitrust authorities that ended a longtime De Beers policy of stockpiling diamonds, in cooperation with Alrosa, to keep prices up.

Though it is a major commodity producer, Russia has traditionally not embraced policies that artificially keep prices up. In oil, for example, Russia benefits from the oil cartel’s cuts in production, but does not participate in them.

Diamonds are an exception. “If you don’t support the price,” Andrei V. Polyakov, a spokesman for Alrosa, said, “a diamond becomes a mere piece of carbon.”

Sunday, May 3, 2009

The Very Highest Quality Diamond Rings... What is White Gold and Where Does It Come From?


There is no such thing as white gold!
There are however gold alloys which appear white, silvery, or grey.
When jewellers speak of white gold, they mean white gold alloys. In most other major languages these alloys are described as grey rather than white. We will stick to "white".

Gold Alloys
Gold itself is a yellow metallic element but, in its pure form, it is too soft to be used for general jewellery purposes, although there are some cultures which do wear pure gold jewellery, it would need to be heavily made and carefully used. The yellow colour of gold is caused by gold absorbing violet and blue light, but reflecting yellow and red light.
It is usual for gold to be mixed with other metals to produce an alloy, which is simply a mixture of two or more metals. Throughout history, most people have preferred the colour of gold jewellery to remain close to that of pure gold itself, and so most jewellery has historically been made using yellow gold alloys. Other metals mixed with gold to produce alloys include copper and silver, which are the common components of most yellow gold alloys, and nickel, zinc, and palladium to produce white alloys.

White Gold Alloys with Nickel
White gold alloys became fashionable in the 1920's, mainly as a substitute for platinum, which had itself recently become fashionable. Platinum is quite expensive, needs greater temperatures than gold, and is generally considered harder to work with than gold, although it is ideal for use in diamond settings. At least three patents were issued for different "recipes" of white gold alloys during the 1920's, using different components to produce the whitening or "bleaching" effect. Simply mixing a white and a yellow metal together does not just produce a pale yellow colour, alloying produces a difference in the atomic structure which alters the reflectivity of light of different wavelengths.
The commonest metal which causes a significant bleaching effect in gold is nickel, which has the great advantage of being inexpensive, and also providing, in 18 carat alloys, a good colour match for platinum, however its colour matching in 14 and 9 carat alloys is poor. It also has the serious defect that it commonly causes dermatitis, through allergic reactions when worn in contact with the skin. It is also considered to be slightly carcinogenic. E.C. Regulations covering the use of nickel in jewellery are being implemented, and soon all or most new jewellery sold in the Community will have to be nickel-free, or at least "nickel-safe". Most American and Italian white gold alloys use nickel.
A typical nickel containing white gold alloy might be, in parts per thousand:
Gold 750, Copper 55, Nickel 145, Zinc 50

White Gold Alloys with Palladium
The other metal which is ideal as a constituent of white gold alloys is palladium, which is a close relative of platinum. Its main disadvantage is that it is quite expensive, indeed at the time of writing this, the market price of palladium was higher than that of gold, due to Russian economic and production problems. Its second disadvantage is the high melting point, although jewellery manufacturing and repair equipment has improved, so that most workshops can now cope. A hidden factor in the high cost of alloy components is that there are large proportions of scrap produced during jewellery manufacture. Because this involves expensive precious metal alloys, recycling and reclamation of the precious metals is very important. When scrap contains high levels of expensive metals like palladium, there are extra costs involved in recovering it, which have to be added back to the production costs.
Other possible whiteners include silver, platinum, chromium, cobalt, tin, zinc, and indium. Silver would be an ideal constituent, with excellent working properties, but unfortunately it does not have a very great bleaching effect. Copper does not tend to whiten, but is used to improve the ductility of most white gold alloys.
A typical palladium containing white gold alloy might be, in parts per thousand:
Gold 750, Silver 40, Copper 40, Palladium 170

We Use Nickel-Free Palladium White Gold
We use 18 carat white gold alloys for most of our diamond ring settings. Our policy is to use only white gold alloys containing palladium, and which are nickel-free.

Black Humour or a White Lie?
I normally answer questions seriously, but do have a rather keenly developed sense of humour. Once a nice couple asked me the usual questions about white gold, and I started with the slightly facetious answer that most gold was yellow, and white gold was very rare. I then explained that it was only found in small quantities in certain mines. By this stage, both of them had nodded and followed the plot, so I was encouraged to continue. Most gold comes from South Africa, and most of the mine labour is performed by low paid black workers. The white mine workers are usually highly paid managers, supervisors, and technicians. The problem with white gold is that it could become stained by perspiration from the black miners, and this ruined its marketability. Therefore white gold seams could only be worked by the highly paid white workers. I managed to continue inventing this mythical scenario expecting them to realise soon that I was leg-pulling, but they continued to nod and make understanding sounds.
Coming to the end of about five minutes of sheer invention, they then said "Is that right", and I laughed and said "No, not a word of it, but you seemed to be enjoying the story, so I carried on!" I'm glad to recall that they joined in the amusement, and I then gave them a more accurate account. I find it intriguing to wonder what would have happened had I left them believing the original story.
You may wish to visit some of our other pages:-
Allergies to Gold Jewellery
Gold Alloys by Weight & Volume
Hardness & Durability of Gold Alloys
White Gold Turns Yellow
What is Rose / Red / Pink Gold?
What is Green Gold?

The jewel in the crown: The curse of Koh-i-Noor

Its 750-year history is peppered with tales of murder and treachery. Now, secret papers released yesterday have added another twist to the 186-carat gem's colourful history. Cahal Milmo reports

Friday, 29 December 2006

* Share

The Independent Close
o DiggDigg
o del.icio.usdel.icio.us
o FacebookFacebook
o RedditReddit
o GoogleGoogle
o Stumble UponStumble Upon
o FarkFark
o NewsvineNewsvine
o YahooBuzzYahooBuzz
o BeboBebo
o MixxMixx
o Independent MindsIndependent Minds
* Print Article
* Email Article
* Text Size
o Normal
o Large
o Extra Large

Some 155 years ago, a nine-year-old boy carrying a silk cushion was brought before Queen Victoria. His job was simple: to present Britain with the most glittering and symbolic spoil of its war to subjugate the Indian sub-continent.

The boy was Duleep Singh, the last Sikh ruler of the Punjab, and the prize his new imperial masters had made him travel 4,200 miles to deliver was the Koh-i-Noor diamond - the mysterious and terrible stone of emperors.

The 186-carat gem, whose name means Mountain of Light in Persian and was described by one Mughal emperor as being "worth half the daily expense of the whole world", carried with it a curse and a 750-year bloodstained history of murder, megalomania and treachery.

But its passage to Britain in 1851 carried a different meaning: it was a carefully choreographed exercise in establishing the majesty of the Raj - and the one-way flow of riches from it.

Lord Dalhousie, the Governor General of India who was credited with masterminding the subjugation of the Punjab in the Second Sikh War in 1849 and subsequent surrender of the diamond, ordered that Prince Duleep, London's new puppet Maharajah of Lahore, deliver the Koh-i-Noor in person.

The diamond was war booty and its delivery was to be a spectacle carried out in much the same manner as the tribute paid by defeated enemies of Egyptian pharaohs and Roman emperors. It was the centrepiece of the Great Exhibition of 1851, attracting thousands of visitors.

In a letter to a friend in 1849, the viceroy wrote: "My motive was simply this: That it was more for the honour of the Queen that the Koh-i-Noor should be surrendered directly from the hand of the conquered prince into the hands of the sovereign who was his conqueror, than it should be presented to her as a gift."

It was perhaps with these words echoing in their ears that 127 years later, British diplomats began the delicate task of dealing with a forceful request from Pakistan - on whose territory the Koh-i-Noor was surrendered - that the diamond be returned.

Secret government papers released under the 30-year rule today at the National Archives in Kew, west London, detail how in 1976 officials at the Foreign Office formulated a firm rebuttal to the Pakistani claim on what had literally become a jewel of the British Crown.

Prince Albert, Victoria's husband, spent £8,000 on having the Koh-i-Noor re-cut - at a cost of 40 per of its weight, slimming it down to 105 carats - after complaints at the Great Exhibition that the imperial prize was lacking in lustre.

It was set into the Imperial Crown and since 1911 the diamond has been worn in crowns worn by the female consort to the monarch, including the late Queen Mother, who wore it for her husband's coronation in 1937 and for her daughter's coronation in 1953.

The demand for the restoration of the diamond came from the Pakistani Prime Minister, Zulfikar Ali Bhutto, in a letter to his British counterpart, James Callaghan. Dated 13 August 1976, the letter began: "I am writing to you shortly before our annual Independence Day. This occasion never fails to bring to mind Pakistan's historic grievances about the disposition of territories and assets to which we were entitled upon the termination of British rule."

Evoking the "immense sentimental value" of the diamond to Pakistan, Mr Bhutto continued: "Its return to Pakistan would be a convincing demonstration of the spirit that moved Britain voluntarily to shed its imperial encumbrances and lead the process of decolonisation."

But a memo from one senior civil servant made it clear that Britain considered possession to be nine-tenths of the law. It read: "The stark facts are these: i) We have the Koh-i-Noor diamond, whether or not our possession of it is legally justified. ii) We have made it clear that we are keeping the diamond, adducing the best arguments to support our contention."

The final response was expressed in more diplomatic language and made use of the fact that, such is the allure and mystique of the diamond, at least a dozen emperors, maharajahs, sultans and governments had been prepared to indulge in rare savagery and deceit to obtain it.

Advisers to Mr Callaghan pointed out that the 1849 Treaty of Lahore, drawn up by Lord Dalhousie to formalise British rule in Punjab, contained a clause formally surrendering the Koh-i-Noor to "the Queen of England".

They also suggested that its passage over the centuries through owners from the Delhi sultanate to the Persian shah meant there would be competing claims for ownership from Iran, Pakistan and India.

In response to Mr Bhutto, Mr Callaghan said: "I need not remind you of the various hands through which the stone has passed over the past two centuries, nor that explicit provision for its transfer to the British Crown was made in the peace treaty with the Maharajah of Lahore which concluded the war of 1849. I could not advise Her Majesty the Queen that it should be surrendered."

Islamabad responded to the rejection by immediately releasing the letters between Mr Bhutto and Mr Callaghan to the Pakistani press, but drew only a muted public response.

The spat was only the latest in a bloody succession of battles for a gemstone which has been the embodiment of the supremacy of force, and a harbinger of ill fortune throughout its history.

The Koh-i-Noor was mined in India in around 1100 and probably originated from Golconda in the southern region of Andhra Pradesh. The shape and size of a small hen's egg, the diamond attained a sinister mystique.

It is probably not entirely coincidental that the Koh-i-Noor is reserved for use in crowns used by a female member of the British Royal Family. A Hindu text from the time of Koh-i-Noor's first authenticated appearance in 1306 states that the stone carries a curse lethal to male owners. It read: "Only God or a woman can wear it with impunity."

By the 16th century, the stone had fallen into the hands of the first Mughal emperor, Babur, whose son was the first to fall foul of the "curse" by being driven from his kingdom into exile.

The later Mughal ruler, Shah Jahan, who built the Taj Mahal, had the diamond placed into the famous Peacock Throne of the dynasty but spent his last days watching its reflection through a barred window after being imprisoned by his son, Aurangzeb.

It was only after the mughals had been deposed and control of the diamond passed to the Persians that the Koh-i-Noor received its present day name.

The story has it that Nadir Shah, the conqueror of the mughals, was preparing to return home after sacking Delhi in 1736 when he realised the diamond was missing from his booty.

He was supposedly tipped off by a disenchanted member of the mughal emperor's harem that his enemy kept it hidden in his turban. Using an old war custom, Nadir Shah proposed an exchange of turbans. As the gem fell to the ground from the unfurling cloth and caught the light, Nadir Shah is said to have proclaimed: "koh i noor."

Since then, the diamond has been lusted after by its owners, who have been hypnotised by its value and status. As one of Nadir Shah's courtiers put it: "If a strong man should take five stones and throw one north, one south, one east and one west, and the last straight up in the air, and then the space between filled with gold and gems, that would equal the value of the Koh-i-Noor."

After the assassination of Nadir Shah, another victim of the curse, the diamond passed through the hands of his successors, each dethroned and ritually blinded, until it was passed in return for sanctuary to Ranjit Singh, the Lion of Lahore, self-declared ruler of Punjab and father of Duleep Singh.

Within 40 years, the stone had passed into the possession of Lord Dalhousie after a military campaign every bit as ruthless and blood-soaked as those which had previously been fought for possession of the Koh-i-Noor. What followed was a process of the Anglicisation of the diamond.

After Prince Albert had it trimmed it was mounted in a tiara, while Prince Duleep was made a ward of the British Crown complete with an annual stipend of £50,000. He converted to Christianity and became a member of the racy circle of the young Edward VII, but died in poverty in Paris in 1893.

Some historians have pointed out that, after 155 years in the possession of British monarchy, the present Queen can claim be one of the longest-standing owners of the Koh-i-Noor. It is kept in the Tower of London as part of the Crown Jewels collection which is worth an estimated £13bn.

But despite Mr Callaghan's rebuttal to Pakistan 30 years ago, the attraction of the diamond remains undimmed. The Indian High Commissioner to London accused Britain of "flaunting" the riches of empire when the Queen Mother's 1937 Coronation Crown was carried atop her coffin in 2002.

The mere suggestion last year that the same crown may pass to Camilla, the Duchess of Cornwall, should her husband become king, was enough for New Delhi to renew its request.

A spokesman for the High Commission in London said: "The Indian government has a legitimate claim. We hope to resolve the issue as soon as possible."

But behind closed doors in Whitehall, it is unlikely that the position outlined 30 years ago has changed.

The history and legend of the Koh-i-noor diamond, how the diamond was recut, and how it is joined by numerous other diamonds on the crown of Queen Vic

The crown of England is very rich in beautiful diamonds; its chief treasure is the famous Koh-i-noor, or "mountain of light."

The history of this stone is obscure, but, as already mentioned, it is believed to be the same gem as that described by Tavernier among the jewels of Aurengzebe. According to a Hindu legend it was worn by one of the heroes of the Indian epic poem the Mahabharata, and it would therefore have a history extending backward about 4000 years. Coming down to later times we find it in possession of Vikramaditya, rajah of Ujayin, 56 B.C., from whom it passed to his successors, the rajahs of Malwa, and latterly to the sultans of Delhi, when Malwa fell into then possession. Its later history is given by Mr. Hunt as follows:--"Nadir Shah, on his occupation of Delhi in 1739, compelled Mohammed Shah, the great-grandson of Aurengzebe, to give up to him everything of value that the imperial treasury possessed; and his biographer and secretary signifies a peshkash or present by Mohammed Shah to his conqueror of several magnificent diamonds. According to the family and popular tradition Mohammed Shah wore the Koh-i-noor in front of his turban at his interview with his conqueror, who insisted in exchanging turbans in proof of his regard. However this might have been, we need have little doubt that the great diamond of Aurengzebe was in the possession of Mohammed Shah at the time of the Persian invasion; and if it was it most certainly changed masters, and became, as is universally asserted, the property of Nadir Shah, who is also said to have bestowed upon it the name of Koh-i-noor. After his death the diamond, which he had wrested from the unfortunate representative of the house of Timur, became the property of Ahmed Shah, the founder of the Abdali dynasty of Kabul, having been given to him, or more probably taken by him, from Shahrikh, the young son of Nadir. The jewel descended to the successors of Ahmed Shah, and when Mr. Elphinstone was at Peshawur was worn by Shah Shujah on his arm. When Shah Shujah was driven from Kabul he became the nominal guest and actual prisoner of Runjet Sing, who spared neither importunity nor menace, until, in 1813, he compelled the fugitive monarch to resign the precious gem, presenting him on the occasion, it is said, with a lakh and 25,000 rupees, or about $60,000. Runjet was highly elated by the acquisition of the diamond, and wore it as an armlet at all great festivals. When he was dying an attempt was made by persons about him to persuade him to make the diamond a present to Jaganath, and it is said that he intimated assent by an inclination of his head. The treasurer, however, whose charge it was, refused to give it up without better warrant, and Runjet dying before a written order could be signed by him, the Koh-i-noor was preserved for a while for his successors. It was occasionally worn by Rhurreuk Sing and Shu Sing. After the murder of the latter it remained in the Lahore treasury until the supercession of Dhulip Sing and the annexation of the Punjaub by the British government (1849), when the civil authorities took possession of the Lahore treasury, under the stipulations previously made that all the property of the state should be confiscated to the East India Company, in part payment of the debt due by the Lahore government, and of the expenses of the war; it was at the same time stipulated that the Koh-i-noor should be presented to the Queen of England. Such is the strange history of certainly one of the most extraordinary diamonds in the world. After the Company became possessed of the gem it was taken in charge by Lord Dalhousie, and sent by him to England in custody of two officers."

When the Koh-i-noor was brought to England it weighed 186 1/16 carats, and had the form shown in Fig. 40. It was exhibited in this state at the Great Exhibition of 1851, and was valued at about $700,000. At that time it was merely surface cut, and was also disfigured with several flaws, so that re-cutting seemed advisable; and it was decided to give it the form of the brilliant. The cutting was begun on July 16, 1852--the Duke of Wellington being the first person to place it on the cutting mill--and was finished Sept. 7, thus occupying in all thirty-eight days of twelve hours each. It had now the form represented in Fig. 41, its weight being reduced to 122 3/4 carats. In cutting it some parts were found to be very much harder than others. Though so much reduced in weight by this operation the Koh-i-noor has been much improved in brilliancy and effect.

Besides the Koh-i-noor, and a great number of fine pearls, the crown of Queen Victoria contains 497 diamonds, of which the value is estimated at more than $372,000.}}}

The Fabled Koh-i-noor Diamond

Like other famous gems, the Koh-i-noor diamond has its share of mystery, intrigue, and curses attached to its long history. This gem has the unusual distinction of never being sold, only won in the course of bloody rebellions, wars and uprisings. Even its beginnings are a subject of debate. Ancient Sanskrit writings claim the magnificent gem was mined in India 5,000 years ago. Yet another source places its discovery in a river bed in 3200 BC. Whenever it was mined, the location where it was found can be narrowed to an area that was one of the earliest regions in the world to produce diamonds; the Golconda Kingdom in India. Upon the ascension of Ghiyas ud din Tughlug Shah I to the Delhi throne he sent his son to conquer Warangal in the Golconda Kingdom. The subsequent plunder of Warangal in 1323 AD resulted in the victors bringing a wealth of gems - including the Koh-i-noor Diamond - back to Delhi.

Its ownership changed royal hands from one successive ruler to another until it became the property of the first emperor of the Mogul Empire, Babur, in 1526 AD. Believed to have weighed 793 carats, its original magnificence was forever lost when - for whatever reason - an unscrupulous jeweler named Borgio reduced the massive gem to a fraction of its former self at 186 carats. Angering his Emperor, Borgio paid heavily for his stupidity, having all his worldly goods confiscated by the Crown.

The now reduced Koh-i-noor diamond remained with the Moguls until 1739 when India was conquered by Nadir Shah of Persia. According to legend, the Mogul emperor, wishing to remain in possession of the gem, hid it in his turban. But Nadir Shah became wise to the defeated Mogul Emperor's scheme, and outsmarted his Mogul counterpart without resorting to violence. Nadir Shah suggested to the conquered Mogul Emperor that they partake in the Oriental custom of exchanging turbans as a symbol of eternal friendship. Since refusing such an offer would have been viewed as a great insult to his conqueror, the Mogul Emperor had no choice but to exchange turbans, giving up his prized possession. Nadir Shah took the gem and returned to Persia. It is while the gem is in the custody of Nadir Shah that it is referred to by its current name, Koh-i-noor, meaning "mountain of light".

With the death of Nadir Shah the diamond came to be in the possession of an Afghan chief named Ahmed Shah. Upon establishing himself as King of Afghanistan, Ahmed Shah used the diamond as the symbol of his authority. Eventually, through a series of political upheavals and rebellions, the diamond found itself back in India, under the possession of Indian princes.

By 1849 the British confiscated the Koh-i-noor Diamond as compensation for the Sikh wars. According to Sir John Lawrence, Governor General of India, the Sikhs handed him a small tin box containing the gem. Inexplicably, the box was somehow misplaced and - worse yet - soon forgotten. It was not until later when the British Government in London made inquires about the diamond that a search was conducted. Fortunately, the Koh-i-noor Diamond was found by a servant in a tool shed in the same tin box!

Upon reaching London, the British Royal Family was disappointed in the lack of beauty in the diamond. A re-cut was attempted to try to gain brilliance. Again reducing its size, this cutting took the Koh-i-noor Diamond from 186 carats to just under 109 carats. It's during this time that a curse is first mentioned in association with the gem, claiming that misfortune would befall whoever wore it. Obviously, the curse did not bother the British Crown, for the Koh-i-noor Diamond was set in a tiara for Queen Victoria, and later used in a new crown at the coronation of Queen Mary. In 1937 the gem was used as the centerpiece for a crown created for Queen Elizabeth, wife of King George VI and mother of the future Queen Elizabeth II. Besides having the distinction of bearing the Koh-i-noor Diamond, centered in a Maltese Cross motif, it is the only British royal headpiece made of platinum. This crown rested atop the Queen Mother's coffin as she lay in state in 2002.

Many countries have laid claim to the Koh-i-noor Diamond. The Sikhs in India demanded the return of the Koh-i-noor diamond to India on the occasion of a State Visit by Queen Elizabeth II. Beant Singh Sandhawalia, the last descendant of Duleep Singh has also requested that Buckingham palace return the Koh-i-noor Diamond. Even the Islamic extremist Taleban have demanded that the diamond be returned to Afghanistan. They assert that the gem is still their property and that their claim outranks that of India. Because of the number of competing claims, true ownership cannot be established; therefore it remains in the Tower of London as property of the British Crown.