Platinum, Emerald and Diamond Ring, Harry Winston, Circa 1955. Photo Sotheby's The square emerald-cut emerald weighing 16.93 carats, flanked by tapered baguette diamonds, size 5½, unsigned. With signed box. Estimate 800,000—1,000,000 USD. Lot Sold 1,874,500...

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,...

An elegant emerald and diamond "thread" ring, by JAR Set with a sugarloaf cabochon emerald, weighing approximately 16.27 carats, within a micro pavé diamond surround and hoop, mounted in platinum, ring size, 5, with French assay mark, in a JAR pink suede...