Tiffany & Co. Coral 18k Yellow Gold Crossover Heart Pendant Necklace. This is an authentic heart necklace from Tiffany & Co. pendant and chain are crafted from solid 18k yellow gold chain in a fine polished finish. The pendant is a puff style beautiful carved salmon coral in a heart shape with the chain wrapped in a crossover design on back and front of the heart. The chain comes with a round spring ring clasp. It bares full designers signatures as well as metal content. Very elegant and chic necklace, will make a wonderful gift for your loved one. Material: Solid 18k yellow gold. Hallmark: Tiffany & Co. 18k Measurements: Chain: 18" Long Pendant: 13mm long x 14mm wide x 6mm high Weight: 3.5 grams Stock#: 40585