Sapphire and diamond ring - Photo Sotheby's

Claw-set with an oval sapphire weighing 22.03 carats, the open work mount set with brilliant-cut and pear-shaped diamonds, size 55. Estimation:  140,000 - 230,000 CHF - Lot. Vendu 164,500 CH

Accompanied by GRS report no. GRS2011-071511, stating the sapphire is of Ceylon origin, with no indications of heating.

Sotheby's. Magnificent Jewels. Genève | 14 nov. 2012 www.sothebys.com