Edwardian Colombian emerald and diamond coronet cluster ring. Set to centre with an octagonal emerald-cut natural Colombian emerald with minor clarity enhancement in an open back rubover setting with an approximate weight of 4.00 carats, further decorated with thirty four round eight cut diamonds in open back grain and cut-down settings with a combined approximate weight of 0.35 carats, to an elegant coronet cluster featuring polished edges, a decoratively pierced gallery with scrolling motifs and open backholing, leading to raised shoulders and flowing through to a solid D-shape shank. Marked platinum, numbered '5652', French, circa 1910, accompanied by Gemmological Certification Services report #80270-94.
