Attractive ruby and diamond ring - Photo Sotheby's

Claw-set with a sugarloaf cabochon ruby weighing 12.25 carats, between triangular diamond shoulders, 521/2. Estimate: 140,000 - 230,000 CHF. Lot Sold: 350,500 CHF

Accompanied by Gübelin report no. 0302653, stating that the ruby is of Burmese origin, with no indications of thermal treatment.

Sotheby's. Magnificent Jewels. Geneva | 14 Nov 2012 www.sothebys.com