Sapphire and diamond ring. Photo courtesy Sotheby's

The oval sapphire weighing 22.99 carats, set between epaulet-shaped diamond shoulders, size 52. Estimate 42,000 — 62,000 CHF

Accompanied by Gübelin report no. 13070105, stating that the sapphire is of Ceylon origin, with no indications of heating.

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