Details
A MAGNIFICENT DIAMOND RING, BY HARRY WINSTON
Set with a pear-shaped diamond, weighing approximately 17.86 carats, flanked on either side by a modified triangular-cut diamond, weighing approximately 1.64 and 1.63 carats, mounted in platinum, in a Harry Winston black suede box
Signed Winston for Harry Winston
With report 1122072789 dated 25 June 2010 from the Gemological Institute of America stating that the pear-shaped diamond is D color, VS1 clarity

With reports 2125072651 and 2125072652 dated 30 April 2010 from the Gemological Institute of America stating that the modified triangular-cut diamonds are G and H color, SI2 and SI1 clarity respectively

Accompanied by a supplemental letter stating that the pear-shaped 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

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