Vintage Diamond Engagement Ring, Old Euro 0.55ct

Centering an Old European cut diamond weighing app. 0.55ct. (H-I color, VS2 clarity) in a four prong mount, flanked by two tapered Baguette cut diamonds weighing app. 0.20ctw., fashioned in platinum. Circa 1960. Center diamond older than mounting. Size 4.5EGL US310981103D