A Gorgeous Antique Tanzanite, Diamond, Australian Opal Ring Vintage Art Deco Style, Sterling Silver. This beautiful estate ring holds a colorful Australian opal triplet gemstone that shows beautiful colors in the light. The opal measures about 14mm x 10mm oval. The setting is composed of sterling silver with beautiful detailing. The setting also holds beautiful tanzanite faceted gems and 8 diamond accents. Overall the ring measures about 3/4 inch long by about 7/8 inch wide from side to side. Ring Size: about 7 1/4 (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.