Lot 425. Impressive 53.17 carats fancy yellow diamond ring. Estimate 1,560,000 — 2,150,000 CHF (1,471,700 - 2,028,305EUR). 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. 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 12 mai 2015, 10:30 AM