Lot 9203. 4.00 carats Cushion-shaped Diamond Ring. Estimate 900,000 — 1,200,000 HKD. Lot Sold 1,125,000 HKD. Photo: Sotheby's. 

Set with a cushion-shaped diamond weighing 4.00 carats, flanked on each side by a half-moon-shaped diamond, mounted in platinum. Ring size: 6¼.

Note: Accompanied by GIA report numbered 5171962900, dated 3 January 2017, stating that the 4.00 carat diamond is D Colour, Flawless, with Excellent Polish and Symmetry.