A Gorgeous Vintage Australian Opal Diamond Ring Art Deco Antique, circa 1950, Wedding - Engagement Ring. This beautiful estate ring holds a gorgeous natural Australian opal gemstone with beautiful colors in the light. The opal measures about 7 x 9 mm oval. It is joined with two white diamond accents on the sides. The setting is composed of 14K yellow gold with Retro Deco detailing. Overall the ring measures about 7/16 inch long by about 3/4 inch wide from side to side. Ring Size: about 8 1/2 (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.