This is a magnificent antique diamond platinum engagement ring from the 1920s. The ring is centered with a sparkling old mine cut diamond that weighs approximately 0.75ct. The color of the diamond is H with VS clarity. The ring is accentuated smaller round cut diamonds weighing approximately 0.30ct. The color of the diamond is H with VS clarity. The top of the ring measures 6mm by 6mm and weighs 4.7 grams. The size of the ring is 6 1/4 and it can be resized. This 1920's style ring is stamped 10% IRID PLAT and signed VP.