This is a gorgeous 18k yellow and white gold engagement ring. The ring is centered with a lovely GIA certified emerald cut Colombian emerald that weighs 2.51ct. The center stone is accentuated by sparkling round cut diamonds that weigh approximately 1.50ct. The color of the diamonds is F with VS clarity. The top of the ring measures 15mm by 14mm. The ring is stamped 18K 750 and weighs 6.2 grams. The ring is size 5 1/2 but it can be resized.