Lot 472. 11.89 carats Burmese ruby and diamond ring. Estimate 115,000 — 170,000 CHF. Lot sold 254,500 CHF. Photo: Sotheby's 2012

Claw-set with a cabochon ruby weighing 11.89 carats, the mount set with brilliant-cut and oval diamonds, size 51. 

Accompanied by SSEF report no. 62401, stating that the ruby is of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels, Geneva, 14 Nov 2012