Emerald and diamond ring. Photo courtesy Sotheby's

The step-cut emerald weighing 3.91 carats, claw-set between collet-set trillion-shaped diamonds, size 521/2. Estimate   26,000 — 35,000

Accompanied by Gübelin report no. 13030045, stating that the emerald is of Colombian origin, with indications of minor clarity enhancement.

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