Edwardian opal and diamond oval cluster ring in platinum on 18kt yellow gold. Centrally set with an oval cabochon cut opal in a platinum millegrain setting, surrounded by sixteen cushion shape old cut diamonds in platinum millegrain settings, to an oval cluster design with scalloped edging, open gallery supported by cheniers and raised inwardly tapering shoulders which smooth to a solid shank. Marked platinum and 18kt gold.