This is an amazing 18k gold engagement ring. The ring is centered with a lovely cushion cut sapphire that weighs 2.79ct. The sapphire is accentuated by sparkling round cut diamonds that weigh approximately 0.50ct. The color of the diamonds is G with VS clarity. The top of the ring measures 11.5mm by 12mm. The ring is stamped 18K 750 and weighs 4.7 grams. The ring is size 6 3/4 but it can be resized.