Item #: 880921 This is an authentic TIFFANY 18K Rose Gold Diamond 1837 Circle Pendant Necklace. This necklace features a circular 18 karat rose gold pendant with a single diamond in the center, approximately .04 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.