Lot 159. A 25.49 carats D color, VVS1 pear-shaped Type IIa diamond pendant, by Graff. Estimate $2,700,000 – $3,500,000. Price realised USD 3,413,000. Photo Christie's Image Ltd 2015

Set with a pear-shaped diamond, weighing approximately 25.49 carats, mounted in platinum. Signed Graff

With report 14913066 dated 22 December 2014 from the Gemological Institute of America stating that the diamond is D color, VVS1 clarity; accompanied by a working diagram indicating that the clarity of the diamond may be potentially Internally Flawless 

Accompanied by a supplemental letter from the Gemological Institute of America stating that the diamond has been determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency. Type IIa diamonds were first identified as originating from India (particularly from the Golconda region) but have since been recovered in all major diamond-producing regions of the world. Among famous gem diamonds, the 530.20 carat Cullinan I and the 105.60 carat Koh-i-noor, are examples of Type IIa

GRAFF 

Founded in 1966 by Laurence Graff, Graff Diamonds has set an unsurpassed standard of excellence and innovation in the world of high jewellery. 

Graff is involved in all stages of the production process, from the mining, cutting and polishing of the diamond and the initial vision and design, to the final exquisite Graff jewel. The Graff master jewellers, based at the company Headquarters in London, draw upon years of training and exceptional levels of skill to create the extraordinarily fine settings and intricate designs synonymous with Graff, the most fabulous jewels in the world. 

Laurence Graff is considered a world leader in the field, and one of the most significant forces in the market. It is said that he has handled more world famous diamonds than any other diamantaire, including the Idol’s Eye, the Begum Blue, the Emperor Maximilian and the Lesotho Promise. 

In 2010 Graff unveiled two of the world’s largest diamonds: the Graff Constellation, a 102.79 ct D-colour Internally Flawless round brilliant diamond, and the Delaire Sunrise, a 118.08 ct Fancy Vivid Yellow square emerald-cut diamond. 

Graff ’s UK flagship store is located on London’s prestigious New Bond Street. Today there are over 30 Graff locations around the world, including Shanghai, Geneva, Hong Kong, Monte Carlo, Moscow and New York.

Christie's. MAGNIFICENT JEWELS, 14 April 2015, New York, Rockefeller Plaza