Lot 286. Platinum, 17.52 carats Burmese Sapphire and Diamond Ring. Estimate 250,000 — 350,000 USD. Lot sold 802,000 USD. Photo Sotheby's

Centering an emerald-cut sapphire weighing 17.52 carats, flanked by two triangle-shaped diamonds weighing approximately 2.75 carats, size 6½.

Accompanied by AGL report no. CS 71040 stating that the sapphire is of Classic Burmese origin, with no indications of heating.

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