Platinum, Cultured Pearl and Diamond Necklace, Tiffany & Co. The triple-strand necklace composed of cultured pearls measuring approximately 8.4 to 6.8 mm, the central motif set with two baroque cultured pearls, one button-shaped cultured pearl and a cultured pearl drop, set with pear-shaped diamonds weighing approximately 6.20 carats, accented by round diamonds weighing approximately 13.25 carats, length 15 inches, signed Tiffany & Co. With signed and fitted box.