Platinum, Emerald and Diamond Ring, Tiffany & Co., Circa 1950. photo Sotheby's

The sugarloaf cabochon emerald measuring approximately 12.78 by 11.06 by 7.62 mm., flanked by triangular-shaped and tapered baguette diamonds weighing approximately 1.55 carats, size 7½, signed Tiffany & Co. With signed box. Estimate 20,000—30,000 USD. Lot Sold 46,250 USD

Sotheby's. Important Jewels, 02 Feb 11, New York www.sohebys.com