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Lot 1854. Very Fine Unmounted 31.98 carats Type IIa Diamond. Estimate 37,000,000 — 48,000,000 HKDLot Sold 38,912,500 HKD. Photo: Sotheby's.

The brilliant-cut diamond weighing 31.98 carats.

Accompanied by GIA report numbered 2185519521, dated 5 July 2017, stating that the 31.98 carat diamond is D Colour, Flawless, with Excellent Cut, Polish and Symmetry; further accompanied by diamond type classification report stating that the diamond is determined to be Type IIa diamond. Type IIa diamonds are the most chemically pure type of diamond and often have exceptional optical transparency.

Sotheby's. Magnificent Jewels and Jadeite, Hong Kong, 03 oct. 2017, 01:30 PM