1950s Colombian emerald and diamond cluster ring in 18kt white gold

1950s Colombian emerald and diamond cluster ring in 18kt white gold. Centred with a 2.70ct octagonal emerald cut Colombian emerald with minor oil in a slightly raised rubover setting, framed by a row of fourteen round brilliant cut diamonds in grain and claw settings, to a stylish cluster design with bespoke settings, pierced and radiating gallery and met to either side with raised inwardly tapering shoulders which smooth to a solid shank. Estimated total diamond weight 1.20cts. Accompanied by GRS certificate.