3 décembre 2017
The Elizabeth A. Keck Diamond Ring
Lot 192. The Elizabeth A. Keck 11.15 carats emerald-cut diamond ring. E stimate $300,000 — 400,000 . Lot Sold 477,000 USD. Courtesy Sotheby's. The emerald-cut diamond weighing 11.15 carats, double prong-set between half-moon-shaped diamonds, size 4¼ ....