13 mai 2017
Sapphire and diamond ring
Lot 329. 11.83 carats sugarloaf sapphire and diamond ring. Estimate 505,000 — 710,000 CHF . Photo: Sotheby's. Set with a sugarloaf sapphire stated to weigh 11.83 carats, the mount pavé-set with brilliant-cut diamonds, size 51, Swiss maker's mark. Sotheby's....