Cartier Maillon Panthere Diamond Ring. 18kt Yellow Gold. Size 50 (US 5-1/2)Cartier Maillon Panthere diamond ring. 18kt Yellow Gold. This ring features 2 rows of 42 x 0. 30 total carat weight of Brilliant cut diamonds. This ring measures: 4. 2mm x 2. 2mm. Current finger size: (50). US 5 1 2. This ring cannot be resized. Purchased: 2019. Hallmark: Cartier. Very Good Condition. Accompanied by the original Cartier box and papers