This is a magnificent platinum diamond engagement ring from the 1920s. The center stone is a GIA certified round brilliant diamond with a weight of 0.81ct. The color of the diamond is E and the clarity is VS1. The center stone is enhanced by approximately 0.15ct marquise and smaller round cut diamonds. The color of these diamonds is G with VS clarity. This ring exhibits beautiful milgrain, open work and gallery design. The ring is size 5 1/2, and can be resized. The ring is stamped 10% IRID PLATINUM.