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Lot 1730. 1.92 carats Type IIa Diamond Ring. Estimate 200,000 — 260,000 HKD. Photo: Sotheby's.

Set with a pear-shaped diamond weighing 1.92 carats, surrounded by circular-cut diamonds of pink tint, within a border of pear- and marquise-shaped diamonds weighing approximately 3.50 carats in total, mounted in platinum and 18 karat pink gold. Ring size: 6

Accompanied by GIA report numbered 2171573271, dated 13 April 2016, stating that the 1.92 carat diamond is D Colour, Internally Flawless; further accompanied by diamond type classification letter stating that the diamond is determined to be a Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

The diamonds of pink tint have not been tested for natural colour origin.

Sotheby's. Important Jewels and Jadeite, Hong Kong, 28 Nov 2016, 01:00 PM