LARGE CUSHION DIAMOND JEWELLERY RING The ring is set with an old-cut cushion diamond in a double setting of calibrated sapphires and diamonds. Set in platinum. French work. Gross weight: 13.34 g. Finger size: 53. Weight of the central diamond: approx. 4.20 to 4.50 carats. A diamond, sapphires and platinum ring. French assay mark. Gross weight : 13,34 gr. Size : 53. Central diamond weight : 4,20 à 4,50 carats approx.