Item #: 813297 This is an authentic TIFFANY 18K Yellow Gold Diamond Ruby X Ring 50 or 5.5. This elegant ring is crafted of 18 karat yellow gold with a central X motif that is accented with diamonds with a total approximate carat weight of 0.25 carats and encrusted with rubies along the band. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.