Spectacular French ring 18 kt gold-platinum 950-diamonds and onyx

Origin: European - French
Confection: impeccable work of antique high jewelry
Circa: 1920
Metal: 18 kt gold and 950 platinum
Gems: brilliant central cut old cut of 0.70 ct color g - purity S II, surrounded by onyx
14 diamonds of 0.03 ct each
Important unisex design made entirely by hand

Total weight: 5 grams
Measurements: ring number 16.5
inner diameter 1.7cm
Remarks: stamped and punched piece
Perfect state