Late Art Deco ball ring in platinum with an openwork design decorated with faceted, rose-cut, old mine and old European diamonds totalling approx. 1.50 ct. In the centre, three larger diamonds, including two Old European-cut diamonds on the sides and an Old Mine-cut diamond in the centre weighing approx. 0.40 ct, with a high crown. One rose-cut diamond is missing. Finger size : 58 Gross weight: 5.7 g.