Ruby and diamond ring - Photo Sotheby's

Claw-set with a step-cut ruby weighing 6.68 carats, the mount set with brilliant-cut and baguette diamonds, size 57. Estimation: 140,000 - 230,000 CHF - Lot. Vendu 230,500 CHF

Accomanied by SSEF report no. 63804, stating that the ruby is of Burmese origin, with no indications of heating. 

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