Estate Vintage Australian Opal and Diamond Ring

Estate Vintage Australian Opal and Diamond Ring. The ring is centrally set with a large oval cabochon cut grey opal measuring 21.28 x 14.35 x 6.35mm. It weighs 8.50cts and exhibits green, blue and red play-of-color. It is framed with 20 round cut diamonds weighing 1.50cts. They are set in a handmade 14K white gold mounting that weighs 6.80dwt/10.80g. The ring is a size 7 1/2.