Item #: 935395 This is an authentic TIFFANY 18K Yellow Gold Diamond Atlas Key Pendant. The necklace is crafted of 18 karat yellow gold and features a key motif with Roman numeral cutouts accented with diamonds, approximately .04 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.