platinum art deco ring with diamonds

An impressive platinum Art Deco ring in geometric shape set with an array of differently cut diamonds . In the middle is a step-cut diamond (app.1.5 carat I, Vvs) with a slightly smaller step-cut next to it (app. 0.5 carat H, Vvs). On the opposite side are two half circles set with Swiss-cut diamonds (app. 3.5 carat H, P1; app. 5.5 carat in total), with Paris import marks for after 1925, circa 1935.
weight: 16 grams
ring size: 16.75 mm / 76 1/4+ US
width: 6 – 19 mm