Vintage Diamond Engagement Ring, Old Euro 0.90ct

Centering an Old European cut diamond weighing app. 0.90ct. (J-K color, SI1 clarity) in a square mount, flanked by 20 bead set, Single cut diamonds weighing app. 0.28ctw., in a tapered split shoulder design, fashioned in platinum. Circa 1940. EGL US312963701D. Size 6.5