platinum cocktail ring

A platinum cocktail ring in the shape of a flower with a high dome with 40 brilliant-cut and 3 large carré-cut pavé-set diamonds (two app. 0.9 carats H-I, VS and I, SI; one centre stone app. 1.35 carats G-H, VS). The petals are set with 16 French-cut  diamonds, and 16 single-cut diamonds at the tips of the petals (app. 10 carats in total, which is also noted in the ring). USA, circa 1950.

weight: 19.13 grams
ring size: 16 mm / 5 ½ USA
height: 1.3 cm