Lot 1638. An impressive 16.38 carats D Colour, Flawless Type IIa diamond ring, mount by Van Cleef & Arpels. Estimate: HK$16,000,000 - 20,000,000 / US$2,064,535-2,580,670. Courtesy Sotheby's.

Set with an emerald-cut diamond weighing 16.38 carats, between tapered baguette diamonds, mounted in platinum, mount signed and with maker's mark for Van Cleef & Arpels, French assay and maker's marks, size 5, sizing band.

Accompanied by GIA report no. 2191493124, dated 24 August 2020 stating that the 16.38 carat diamond is D Colour, Flawless, Excellent 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.

Sotheby's. Magnificent Jewels, 7 October 2020, Hong Kong.