c.1920s Diamond Onyx 18k White Gold Filigree Cocktail Ring Star Art Deco Antique

Style: you are looking at a beautiful cocktail ring from the Art Deco era featuring an old single cut diamond set into an onyx all set in a striking 18k white gold filigree setting featuring a star motif. We estimate time of production the the 1920s
Metals: 18k White Gold (hallmarked & tested)
Gemstones: one old single cut diamond approximately 0.05ct, one square rounded corner cut onyx 20x10mm, onyx has a surface abrasion, expected for a ring of this age
Gemstones measured and graded while set as mounting allows, weight calculated by formula, all weights and grades are approximate
Ring Size: 4.75
Total Weight: 4.3g
Measurements: front of the ring 22.6mm wide (N-S), shank 1.4mm wide in the back
Hallmarks: 18k
Condition: Estate item in good condition consistent with normal wear, shank was sized