Emerald and diamond ring. Photo courtesy Sotheby's.

Centring on a cabochon emerald weighing 28.81 carats, between shield-shaped diamond shoulders, size 52, sizing band. Estimate:  90,000 – 135,000 CHF

Accompanied by SSEF report no. 68180, stating that the emerald is of Colombian origin, with a minor amount of oil in fissures/

Sotheby's. Magnificent Jewels. Genève | 13 nov. 2013 - http://www.sothebys.com