Item #: 794133 This is an authentic TIFFANY Rubedo Interlocking 1837 Pendant Necklace. The necklace is crafted of Tiffany's signature rubedo metal and features two interlocking 1837 rings on a delicate chain. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.