Item #: 1210973 This is an authentic CARTIER 18K Yellow Gold Black Onyx Emerald Double Panthère De Cartier Bypass Ring size 51 or 5.75. The ring is crafted of 18 karat yellow gold and features two panther head motifs with black onyx nose and emerald eyes in a bypass style. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.