Item #: 265659 This is an authentic TIFFANY & CO 18K White Gold Diamond Atlas Pierced Key Pendant Necklace. This charming pendant is 18 karat white gold in the form of a key with Roman numerals and four diamonds. This is a charming piece with the unforgettable style of Tiffany & Co. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.