Item #: 1018969 This is an authentic TIFFANY 18K Yellow Gold 1837 Interlocking Circles Ring 50 5.5. The ring is crafted of 18 karat yellow gold and features two interlocking bands engraved with the Tiffany logo and 1837 motif. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.