platinum ring with moonstone and diamond

A sweet Edwardian platinum ring set with a round, silky white moonstone engraved with the face of the moon. Around and underneath the six prongs are different sizes and shapes of old cut and rose cut diamonds. On the shank of the ring are two curves one with two and the other with three old cut diamonds (app. 0.94 carat in total), American, circa 1915.

weight: 4.00 grams
size: 16.5 mm / 6 US
width: 11.8 – 1.8 mm