This is an amazing platinum engagement ring from the Art Deco era. The ring is centered with a sparkling GIA certified old mine cut diamond that weighs 0.91ct. The color of the diamond is I with SI1 clarity. The center diamond is accentuated by round cut diamond accents. The top of the ring measures 11mm by 18mm. The ring weighs 4.7 grams. The ring is size 7 1/2 but it can be resized.