A Yellow Gold, Platinum, Emerald, Diamond and Onyx Brooch, 1935, consisting of a central onyx plaque with loops of polished gold extending outward to the sides, the onyx center containing one cushion shape cabochon cut emerald weighing approximately 15.00 carats and measuring approximately 18.80 x 13.70 mm, together with eight transitional and old European cut diamonds weighing approximately 0.26 carat total.Accompanied by an American Gemological Laboratories emerald identification and origin certificate number CS 68907, dated July 16, 2015, stating Mineral Type: Natural Beryl, Variety: Emerald, Origin: Russia (Ural Mountains), Clarity Enhancement: Minor, Type: Traditional. 12.40 dwts.