Vintage Diamond Engagement Ring, Cushion 1.56ct

Centering a Cushion Modified Brilliant cut Fancy Brown diamond weighing app. 1.56ct. (Natural Fancy Yellow-Brown) in a four prong mount, flanked by two tapered baguettes weighing app. 0.30ctw., fashioned in platinum. Mid 20th century. Size 6.5GIA 6157058700