Displaying items by tag: carats

On November 13, 2013 Sotheby’s Geneva will auction a 59.60-carat oval cut fancy vivid pink diamond at its Magnificent Jewels sale. Known as “The Pink Star” the gem is the largest internally flawless diamond that has ever been graded by the Gemological Institute of America. The diamond is expected to garner over $60 million.

David Bennett, Chairman of Sotheby’s Jewelry Division in Europe and the Middle East, said, “I have had the privilege of examining some of the greatest gemstones in the world over the past 35 years, and I can say, without hesitation, that ‘The Pink Star’ is of immense importance.” The gem’s vibrant hue combined with its extraordinary size makes it the most exceptional pink diamond known to exist in State, Royal and private collections. The Pink Star belongs to a rare subgroup called “Type IIa,” which includes less than two percent of all gems.

The diamond was cut from a rough stone weighing 132.5 carats, which was mined in Africa in 1999 by De Beers. It was later cut, polished and transformed into its current form by Steinmetz Diamonds. The Pink Star has been exhibited at the Smithsonian Institution as well as the Natural History Museum in London.

A flawless D-color diamond weighing 101.73 carats will be offered as part of Christie’s International’s jewelry auction at the Four Seasons Hotel des Bergues in Geneva, Switzerland on May 15, 2013. The pear-shaped gem, which is the largest colorless diamond of such high quality to appear at auction, is estimated to garner about $20 million. An anonymous client is selling the rare stone that was recently cut from a rough diamond weighing 236 carats found at the Jwaneng mine in Botswana. Workers spent 21 months polishing the jewel.

While colorless stones tend to be less desirable than their colored counterparts, the record price for a colorless stone at auction is $21.5 million, which was set by the 76.02 carat cushion-shaped Archduke Joseph Diamond that sold at Christie’s in Geneva in November 2012. The diamond heading to Christie’s in May is not only the largest colorless stone but also a chemically pure Type IIA diamond, which accounts for less than 2% of the world’s diamond production.

The buyer of the pear-shaped diamond will have the honor of naming the extraordinary jewel, securing its identity among the most desirable diamonds in the world.