Lot 1817. A 16.42 carats Type IIa Diamond Ring, Van Cleef & Arpels. Estimate 14,000,000 — 18,000,000 HKD (1,786,260 - 2,296,620 USD). Courtesy Sotheby's.

Set with an emerald-cut diamond weighing 16.42 carats, flanked by tapered baguette diamonds, mounted in platinum, size 5¼, signed Van Cleef & Arpels, French assay and maker’s marks, sizing band.

Accompanied by GIA report no. 2191493124, dated 1 August 2018, stating that the diamond is D Colour, Flawless, Excellent Polish and Symmetry; further accompanied by a diamond type classification report 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 and Jadeite, Hong Kong, 07 Oct 2019