This is a magnificent diamond platinum engagement ring from the 1920s. The ring is centered with a sparkling old mine cut diamond that weighs approximately 0.45ct. The color of the diamond is H with VS2 clarity. The ring is accentuated smaller round cut diamond accent. The top of the ring measures 5.5mm by 5.5mm and weighs 3.1 grams. the size of the ring is 7 3/4 and it can be resized.