A Lovely Estate Blue Topaz Ring, Vintage Sterling Silver. The center of the ring holds a beautiful faceted blue topaz gemstone measuring about 8mm in diameter and estimated at about 2.75ct in weight. The setting is sterling silver. Overall the ring measures about 3/8 inch long by about 3/4 inch wide. Ring Size: about 6 (could be resized by your jeweler or ask me about using mine before shipping). This ring was acquired through an estate collection and is in lovely vintage condition.