Tiffany & Co. Elsa Peretti, 18k yellow gold large \Open Heart\ necklace Designed as an 18k yellow gold \Open Heart\, measuring approximately 35 X 30 mm, marked Tiffany & Co., Elsa Peretti, 750, Spain, suspended from an 18k yellow gold, 1.5 mm, open link, 31 inch link chain, marked Tiffany & Co., Spa