This is an amazing platinum engagement ring. The ring is centered with a lovely GIA certified oval cut sapphire that weighs 4.95ct. The sapphire is accentuated by sparkling marquise and round cut diamonds that weigh 1.00ct. The color of these diamonds is H with VS clarity. The top of the ring measures 10.5mm by 18mm. The ring is stamped Pt900 S4.95 D1.00 and weighs 7.7 grams. The ring is size 6 1/4 but it can be resized.