Lot 281. Platinum, 18 Karat Gold, 24.54 carats Emerald and 32.03 carats Diamond Necklace, Harry Winston. Estimate 225,000 — 325,000 USD. Lot sold 340,000 USD. Photo Sotheby's

In the form of a wreath, set at the front with eleven emerald-cut emeralds weighing 24.54 carats, accented by marquise-shaped diamonds weighing 26.32 carats, further set with pear-shaped diamonds weighing 20.58 carats, completed by round diamonds weighing 5.71 carats, length 16 inches, signed HW, numbered 63296. 

Accompanied by eleven AGL reports stating that the emeralds are of Colombian origin, clarity enhancement: faint to moderate, type: oil.

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