This is an amazing 18k gold engagement ring. The ring is centered with a lovely cushion cut sapphire that weighs 4.36ct. The sapphire is accentuated by sparkling round cut diamonds that weigh approximately 0.80ct. The color of these diamonds is G with VS clarity. The top of the ring measures 12mm by 12mm. The ring is stamped 750 and weighs 5.2 grams. The ring is size 6 1/4 but it can be resized.