Platinum and Diamond Ring, Tiffany & Co. © Doyle New York Centering one asscher-cut diamond approximately 3.19 cts., flanked by 8 square-cut diamonds, the basket set with 12 single-cut diamonds, signed Tiffany & Co., circa 1920, approximately 2.2 dwt....

TIFFANY. Stunning Carved Ivory Rose Brooch, USA, circa 1950s. photo by Hancocks Unusual brooch designed as a rose-head in carved ivory with yellow gold and turquoise cabochon highlights, with a yellow gold and diamond stigma. French makers and export...

14 karat gold and onyx botanical sketch easel, Verdura. photo Sotheby's The sketch with various botanical drawings on ivory with the scientific classification for each plant on the reverse, signed Fulco Pinxit, the gold easel set with an onyx cabochon,...