Lot 425. Impressive 53.17 carats, VS2 Clarity fancy yellow diamond ring. Estimation 1,560,000 — 2,150,000 CHF. Lot sold 1,690,000 CHF. Photo Sotheby's. 

Claw-set with a cushion-shaped fancy yellow diamond weighing 53.17 carats, between triangular diamond shoulders, size 52.

Accompanied by GIA report no. 2165882800, stating that the diamond is Fancy Yellow, Natural Colour, VS2 Clarity.