Lot 232. 18 Karat Gold, Colombian Emerald and Ceramic Ring, Taffin. Estimation 250,000 — 350,000 USD. Photo: Sotheby's.

Set with a cushion-cut emerald weighing 17.81 carats, with a gray ceramic mounting, size 6, signed Taffin, numbered TF 4570, with maker's mark.

Accompanied by Gübelin report no. 16067266 stating that the emerald is of Colombian origin, with indications of minor clarity enhancement.

Sotheby's. Magnificent Jewels Including the Legendary Stotesbury Emerald, New York, 25 avr. 2017, 10:00 AM.