Lot 324. Formerly from the Estate of Marianne Gould McDonough and Thence by Descent. Sapphire and Diamond Ring, John Rubel, 31.34 carats, Ceylon, circa 1947. Estimate 200,000 - 300,000 USD. Lot sold 785,000 USD. Courtesy Sotheby's The emerald-cut sapphire...

Turquoise, ruby and diamond brooch, John Rubel, 1940s. Photo Sotheby's Designed as a stylised flower, the petals set with cabochon turquoise, the bombé centre set with circular-cut rubies and a brilliant-cut diamond, smaller flowers around the edge similarly...