Lot 65. 10.12 carats Colombian Emerald and diamond ring. Estimate CHF 48,000 — 68,000. Photo: Sotheby's.

Set with a step-cut emerald weighing 10.12 carats, between shield-shaped diamonds shoulders, size 52.

Accompanied by SSEF report no. 74733, stating that the emerald is of Colombian origin, with a minor amount of oil in fissures.