Gold and Platinum RingReference 6330 "Marquise" Ring in 18K White Gold and Platinum Set with 3 brilliant cut diamonds (the center estimated at 0. 15 carats, the two smaller ones approx. 0. 06 carats each), surrounded by 12 single cut diamonds (8x8 cut, approx. 0. 024 carats each). Estimated total diamond weight: approx. 0. 51 carats Total weight: 4. 40 grams Maximum height thickness: 6. 5 mm Ring size: European 56 approximately US size 7. 5 Hallmarks: French eagle's head