Item #: 225244 This is an authentic CARTIER 18K Yellow Gold Citrine Tank Ring 50 5.25. This lovely ring is made of 18 karat yellow gold. The simple band has a single square citrine stone that gives a look of pure elegance and sophisticated taste from Cartier. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.