This is an authentic TIFFANY 18K White Gold Diamond 1837 Circle Pendant Necklace. The necklace is crafted of 18 karat white gold and features a circle pendant engraved with the 1837 logo and set with a single bezel set round brilliant cut diamond, approximately .06 carats. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.