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Auction sale reference

Diamond Ring | 格拉夫 | 10.45克拉 圓形 D色 Type IIa 鑽石 戒指

Sold for HK$5,760,000 at Sotheby's on Apr 23, 2026.

Diamond Ring | 格拉夫 | 10.45克拉 圓形 D色 Type IIa 鑽石 戒指 auction lot image

Lot description

Set with a brilliant-cut diamond weighing 10.45 carats, flanked by two tapered baguette diamonds, mounted in platinum, size 7¾, signed Graff, numbered, case stamped Graff. Accompanied by GIA report no. 5211557343, dated 10 April 2026, stating that the 10.45 Carat is D colour, VVS1 Clarity, Excellent Cut, Polish and Symmetry. Further accompanied by a 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. Together with the original working diagram stating that the diamond may be potentially Internally Flawless. Also accompanied by a certificate of authenticity from Graff.

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