12 décembre 2015
Platinum, Sapphire and Diamond Ring, Black Starr & Frost
Lot 509. Platinum, 13.76 carats Sapphire and Diamond Ring, circa 1925, Black Starr & Frost. Estimate 300,000 — 500,000 USD. Lot sold 394,000 USD. Photo Sotheby's Set with an emerald-cut sapphire weighing 13.76 carats, the mounting decorated with round...