YEARS 1935 CUSHION SAPPHIRE RING APPROX. 6 CARATS The cushion sapphire is held by a bezel with four large claws and framed by two baguette diamonds. Set in platinum. French work. Gross weight: 5.72 g. Finger size: 50.5. Preliminary opinion of GEM Paris: origin Burma, no trace of heat treatment. A 6 carats approx. sapphire and platinium ring, circa 1935. French assay mark. Gross weight : 5,72 gr. Size : 50,5. GEM Paris preliminary report, in his opinion : origin Burma, no trace of heat treatment.