RN0020-SV-21 925 silver 2 stone ring with tanzanite. The 4mm round gems have an approximate weight of 0.46 carats and a metal weight of 6 to 8 grams. Read complete details for this gorgeous ring at http://www.jewelat.com/shop/rings/770-RN0020-SV-21-ring-925-silver-tanzanite.html