Item #: 877037 This is an authentic TIFFANY 18K Yellow Gold Lock and Key Pendant Necklace. The necklace is crafted of 18 karat yellow gold and features an assortment of charms, including a key, an ampersand, and a lock. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.