Art Deco style ring with ~0.81ct diamond

1 diamond weighing about 0.81ct F-G/SI
26 diamonds weighing about 0.25ct
total weight of diamonds in the piece about 1.06ct
weight of the piece: 3.59g, gold pr. 0.585 certificate HRD Antwerp
Art Deco style ring with centrally set exceptionally white and vivid diamond about 0.81ct, arched bezel, beautiful classic setting