细节
AN IMPORTANT DIAMOND RING, BY HARRY WINSTON
Set with a rectangular-shaped diamond weighing 8.88 carats, flanked by tapered baguette-cut diamonds, mounted in platinum, ring size 6¼
Signed Winston for Harry Winston
Accompanied by report no. 16371645 dated 7 November 2008 from the Gemological Institute of America stating that the 8.88 carat diamond is D colour, internally flawless clarity
Also accompanied by a supplemental letter from the Gemological Institute of America stating the 8.88 carat diamond has been determined to be type IIa. 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 and the 105.60 carat Koh-i-noor, are examples of Type IIa