18ct gold and diamond 'Open Heart' pendant necklace, Elsa Peretti for Tiffany & Co., circa 1980, designed as a stylised open work heart pave-set with brilliant-cut diamonds, completed by a fine trace link chain, pendant approximately 34.40 x 34 mm, signed Tiffany & Co., indistinctly Peretti, chain signed T & Co for Tiffany & Co.