Item #: 1581850 Year: 1998 This is an authentic CARTIER 18K White Gold Citrine Tank Ring 52 6. The ring is crafted of 18 karat white gold and features a single square citrine cabochon centered along a polished, tapered band. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.