Lot 306. Very Fine Platinum, 18 Karat Gold, 9.84 carats Colombian Emerald and Diamond Ring, Harry WinstonEstimate 400,000 — 600,000 USD. Photo: Sotheby's.

Centered by a square emerald-cut emerald weighing approximately 9.84 carats, framed by pear-shaped diamonds weighing approximately 7.80 carats, size 5¾, signed Winston, with maker's marks for Jacques Timey.

Accompanied by AGL report no. CS 1073341 stating that the emerald is of Classic Colombian origin, clarity enhancement: insignificant to minor, type: traditional.

Sotheby's. Magnificent Jewels: Starring the Shirley Temple Blue Diamond, New York, 19 avr. 2016, 02:00 PM