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A diamond ring. Photo Christie's Image Ltd 2013

Set with a rectangular-cut diamond, weighing approximately 25.11 carats, flanked on either side by a tapered baguette-cut diamond, mounted in white gold. Estimate $450,000 - $650,000. Price Realized $1,235,000

With report 2155721271 dated 11 October 2013 from the Gemological Institute of America stating that the diamond is J color, VVS2 clarity

Accompanied by a supplemental letter 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

PROPERTY OF A PRIVATE COLLECTOR

Christie's. MAGNIFICENT JEWELS. New York, Rockefeller Plaza. 10 December 2013 - www.christies.com