18 Karat Gold, Platinum, 14.78 carats Colombian Emerald and Diamond Ring. Estimate 500,000 — 700,000 USD. Lot sold 610,000 USD. Photo Sotheby's

Centering an emerald-cut emerald weighing 14.78 carats, flanked by two triangle-shaped diamonds weighing approximately 1.40 carats, size 5¼.

Accompanied by AGL report no. CS 59431 stating that the emerald is of Classic Colombian origin, clarity enhancement: insignificant, type: traditional.

Sotheby's. Magnificent Jewels New York | 09 Dec 2015.