This is an authentic TIFFANY 18K Yellow Gold Diamond Narrow 1837 Ring 56 7.5. The ring is crafted of 18 karat rose gold and features the 1837 logo engraved between two bezel set diamonds, approximately .04 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.