This piece was crafted during the mid century period ( 1940-1960 ). The halo setting is 14k white gold and features an immaculate oval white opal center measuring approximately 3 carats. This ring also features 2 carats total weight of dazzling white diamonds. This piece really is a show stopper with 16 stunning diamonds encompassing the beautiful bezel set center opal. This cocktail ring is a wonderful mid century find. The ring is currently a size 7.