Year: 1990 This is an authentic TIFFANY 18K Yellow Gold Signature X Ring 50 5.5. This elegant ring is crafted of 18 karat yellow gold and feature a X motif. This timeless piece will bring a special style to any look, from Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.