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17 avril 2016

A 10.02 carats Type IIa oval brilliant-cut diamond ring

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Lot 187. A 10.02 carats Type IIa oval brilliant-cut diamond ringEstimate $1,000,000 – $1,500,000. Photo Christie's Image Ltd 2016.

Set with an oval brilliant-cut diamond, weighing approximately 10.02 carats, flanked on either side by a pear-shaped diamond, weighing approximately 0.74 carats each, ring size 6 1/2, mounted in platinum

Accompanied by report no. 5131281113 dated 7 March 2016 from the GIA Gemological Institute of America stating that the diamond is D color, Internally Flawless Clarity

With 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

With report nos. 2165297813 and 1122334346 dated 18 August 2014 and 25 July 2011 from the GIA Gemological Institute of America stating that the diamonds, weighing 0.74 carats each, are D color, Internally Flawless clarity

Christie's. MAGNIFICENT JEWELS & THE JUBILEE RUBY, 20 April 2016, New York, Rockefeller Plaza

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