Art Deco ring with ~5.70ct diamonds made of gold and platinum

1 diamond in old cut weighing about 1.00ct J/VS-SI
2 diamonds weighing about 1.20ct L/VS2
16 diamonds weighing about 3.50ct J-L/VS2-P1
total weight of diamonds in the product about 5.70ct
product weight: 18.20g, pr. 0.750 gold+platinum
time of creation: Western Europe, circa 1935
Large diamonds in old cuts combined with the sought-after form of the ring typical of the Art Deco period, a product of unusual character with a strongly outlined geometric form. The central diamond of about 1.00ct, two diamonds of about 0.60ct, four of about 0.40ct and 12 smaller diamonds set in platinum create an effect that cannot be passed by indifferently.