An Incredible Estate Australian Opal and Ruby Ring, Antique Vintage 18K Gold Retro Deco Setting, circa 1950. This gorgeous estate ring holds a stunning array of Australian opals and round faceted rubies. The stones are all set in a beautifully made Retro Art Deco setting composed of 18K gold. Overall the ring measures about 1 1/8 inch long by about 1 1/8 inch wide from side to side. Ring Size: about 9 (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 with one nick to one opal mentioned for accuracy. An incredible estate ring.