Item #: 1087937 This is an authentic TIFFANY 18K Rose Gold Diamond Large Atlas X Pendant Necklace. The necklace is crafted of 18 karat rose gold and features an "X" motif pendant accented with round brilliant cut diamonds, approximately .19 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.