This is an amazing platinum engagement ring by Cartier. The ring is centered with a sparkling GIA certified round brilliant cut diamond that weighs 0.49ct. The color of the diamond is F with VS2 clarity. The center diamond is accentuated by dazzling round cut diamond accents. The ring is signed Cartier and stamped Pt 950 48 and is numbered. This 0.49ct Cartier diamond engagement ring is size 4 1/2 but it can be resized. The ring weighs 4.2 grams.