This is an amazing platinum engagement ring from the 1920s. The ring is centered with a sparkling GIA certified old European cut diamond that weighs 1.31ct. The color of the diamond is J with VS1 clarity. The top of the ring measures 7mm by 16mm. The ring is stamped 10% IRID PLAT and weighs 4.3 grams. The ring is size 6 1/2 but it can be resized.