Gems




Rare Blue Diamond sells for $9.6 million
A rare blue diamond ring was auctioned by Bonhams April 24 2013, as part of its Fine Jewellery Sale in London.

Estimated to fetch between £1 million and £1.5 million, the "Trombino" ring by renowned Italian jeweller Bulgari realised more than four times its high estimate, selling to Laurence Graff of Graff Diamonds for £6.2 million. This record price of US$1.8m per carat beat the previous world record price of US$1.68m per carat for a blue diamond.
The diamond is a "fancy deep-blue" stone weighing 5.3 carats.
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http://news.discovery.com/earth/rocks-fossils/blue-diamond-record-price-130426.htm


"Winston Legacy" sells for $ 26.7m
(Reuters) - A pear-shaped colorless diamond that is the largest ever offered at auction sold for a record of nearly $27 million in a Geneva auction, where records were also set for the prices of pearls and sapphires, auctioneer Christie's said.

The 101.73 carat "Winston Legacy" diamond, the centerpiece of the Magnificent Jewels auction, was bought by jewelry and watch firm Harry Winston for 25.9 million Swiss francs ($26.7 million) on Wednesday.

"Harry Winston acquired the most perfect diamond ever offered for sale at auction," said Rahul Kadakia, head of Jewelry, Christie's Switzerland and Americas,

Sotheby's also sold a 74.53-carat fancy yellow diamond that once belonged to Ahmad Shah Qajar, the shah of Persia from 1909 to 1925 and the last ruler of the Qajar dynasty. Its sale for nearly $3 million set both an auction record and a record price per carat — an eye-popping $40,061 per carat — for a fancy yellow diamond.

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On 15 May 2013 Christie’s will auction in Geneva a pear-shaped perfect diamond weighing 101.73 carats. Offered for sale for the first time, this sensational gemstone is not only one of the largest pear-shaped diamonds known to date, it is also one of the world’s most perfect diamonds: a D colour, Type IIA Flawless gem. The rare brilliance and inner limpidity is only found in the chemically pure Type IIA diamonds, which account for less than 2% of the world’s diamond production.

Christie's said the rough stone weighed 236 carats when it was extracted from the Jwaneng mine (DeBeers) in Botswana and required 21 months to polish.
In November 2012, Christie's sold the cushion-shaped, colourless, 76.02-carat Archduke Joseph Diamond for a world record-setting $21.5 million.
The Steinmetz Pink

The Steinmetz Pink is an internally flawless 59.6 carat vivid pink diamond and is said to be one of the most precious stones ever mined.

The gem was discovered in southern Africa in 2001 and weighed over 100 carats. Unveiled in 2003 after 20 months of cutting and polishing, the gem's facet pattern is unique: an oval mixed cut with a step-cut crown and a brilliant cut pavilion.

The stone is conservatively estimated to be worth at least $ 25m.



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Most Expensive Gems at Auction
The onyx and diamond panther bracelet was once owned by Wallis Simpson, whose love affair with King Edward VIII led to his abdication in 1936.

It was rumored Madonna purchased the piece on November 30, 2010 for $ 12.4m.
The ring is set with a triangular-cut fancy vivid blue diamond, weighing 10.95 carats, and a triangular-cut diamond, weighing 9.87 carats, and dates from 1972. It was purchased by an Asian collector on May 19, 2010 for $ 15.7m
The Chloe Diamond is a brilliant-cut diamond, weighing 84.37 carats, bought by Georges Marciano, the founder of clothing company Guess? Inc. Marciano named the stone “the Chloe Diamond” after his then 12-year-old daughter.

The diamond sold for $16.2 Million at Sotheby's Geneva in 2007.
A 14.23 carat diamond, named The Perfect Pink, sold for $23,165,968 in November 2010 to an anonymous buyer after an intense bidding war with four others.

Christie's says only 18 diamonds bigger than 10 carats and showing a distinct pure pink colour have ever gone on the block in 244 years of auction history.
The Wittelsbach-Graff Diamond is a cushion-cut fancy deep grayish blue diamond weighing 35.56 carats. It sold at auction in December 2008 for $24.3m

The diamond originates from the Indian kingdom of Golkonda. It's rumored that King Philip IV of Spain purchased the jewel and included it in the dowry of his teenage daughter, Margaret Teresa, in 1664.
The Princie Pink is a cushion-cut 34.65 carats and is one of the finest and largest of its kind.

The stone can be traced back to the ancient diamond mines of India. The diamond was sold at auction in 1960 where it brought a price of 46,000 pounds sterling (approximately $69,588 in today's currency).

The stone sold for $ 39m in April, 2013.

http://pennystockjournal.blogspot.ca/2013/04/princie-pink-expected-to-bring-40m.html
The Graff Pink is a vivid pink, round-cornered rectangular step-cut diamond weighing 24.78 carats, set between shield-shaped diamond shoulders, in platinum.

It sold on November 10, 2010 for $ 46.2m

http://pennystockjournal.blogspot.ca/2013/04/the-graff-pink-most-expensive-gem-ever.html


http://pennystockjournal.blogspot.com/2013/05/most-expensive-gems-at-auction.html
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Sotheby’s New York annual spring auction

The global market for large diamonds seems to be holding up well.

"The centerpiece of this sale is an exceptional 74.79-carat, D, VVS1, potentially flawless, type IIa, pear-shaped diamond with a presale estimate of $9 million to $12 million.

It was acquired by the present owner in 2001 for $4.3 million and today we have estimated it conservatively at $120,000 per carat."

Those of us on a budget might consider the almost as nifty ... "Set with two pear-shaped Fancy Pink diamonds weighing 5.79 and 5.68 carats, suspended by clusters of round, pear and marquise-shaped diamonds weighing approximately 19.25 carats."

Estimated at a ridiculously reasonable $ 3.5m to $ 4.5m.

http://www.sothebys.com/en/auctions/ecatalogue/2012/magnificent-jewels-n08980/lot.393.lotnum.html

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Christie's to auction 'perfect' 101 ct diamond
On 15 May 2013 Christie’s will auction in Geneva a pear-shaped perfect diamond weighing 101.73 carats. Offered for sale for the first time, this sensational gemstone is not only one of the largest pear-shaped diamonds known to date, it is also one of the world’s most perfect diamonds: a D colour, Type IIA Flawless gem. The rare brilliance and inner limpidity is only found in the chemically pure Type IIA diamonds, which account for less than 2% of the world’s diamond production.

Christie's said the rough stone weighed 236 carats when it was extracted from the Jwaneng mine (DeBeers) in Botswana and required 21 months to polish.
In November 2012, Christie's sold the cushion-shaped, colourless, 76.02-carat Archduke Joseph Diamond for a world record-setting $21.5 million.



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The Golden Jubilee at 545.67 carats is the largest known gem quality diamond. The rough stone weighed 755 carats and was discovered at the Premier mine, South Africa in 1985. The Golden Jubilee was presented to the King of Thailand in 1997 for his Golden Jubilee - the 50th anniversary of his coronation.
The Cullinan I, a pear shaped diamond weighing 530.20 carats ... known as the Star of Africa.

The Cullinan I is the largest of 9 large stones cut from the 3106 carat Cullinan Diamond. King Edward used it in the Sovereign's Royal Sceptre, part of the Crown Jewels on display in the tower of London.
The Incomparable. 890 carats rough was found in the town of Mbuji Mayi in the Democratic Republic of Congo (formerly Zaire) in the 1980s. Four years were spent studying and then cutting the stone, the biggest piece of rough ultimately yielded a gem weighing 407.48 carats; it is the third largest diamond ever cut. Internally flawless clarity and fancy brownish-yellow in color.
The Cullinan II is 317.40 carats, a cushion shaped diamond in the center-front of the Imperial State Crown of Great Britain. Cullinan II was also cut from the largest gem-quality diamond ever found, the Cullinan. It was named after Sir Thomas Cullinan, who opened the mine and was visiting on that eventful day. The nine larger stones of the Cullinan diamond remain in personal possession of the Royal Family.
The Spirit of de Grisogono, at 312.24 carats, is the world's largest cut black diamond. It is set with 702 white diamonds totaling 36.69 carats. This diamond originally had a rough weight of 587 carats and was mined several decades ago in west Central Africa.
The De Beers diamond was found in Kimberly mines in 1888, the rough stone weighed 428.50 carats. Weighing 234.65 carats finished, the De Beers is the 8th largest faceted diamond in the world.



The Red Cross is canary yellow cushion-shaped diamond with weight of 205.07 carats. The rough stone weighed 375 carats and was found in Kimberly mines South Africa in 1901. A Maltese Cross is distinctly visible in the top facet.
The Darya-ye Noor (Persian: دریای نور‎) which means "Sea of Light", or "Ocean of Light", weighing an estimated 182 carats.

Its colour, pale pink, is one of the rarest to be found in diamonds.