This is an authentic TIFFANY 18K Rose Gold Diamond 1837 Circle Charm Pendant Necklace. The necklace is crafted of 18 karat rose gold and features a round motif with T & Co engravings and diamond accents weighing approximately .05 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.