RN0020-GY-19 yellow gold ring with two gemstones with tanzanite and diamond. The 4mm round gems have an approximate weight of 0.23 carats and a metal weight of 6 to 8 grams. Read complete details for this gorgeous ring at http://www.jewelat.com/shop/rings/760-RN0020-GY-19-ring-yellow-gold-tanzanite.html