Colombian emerald and diamond coronet cluster ring. Centrally set with an octagonal emerald-cut natural Colombian emerald with minor clarity enhancement, in an open back rubover setting with an approximate weight of 1.60 carats, encircled by a single row of twenty two round eight cut diamonds in open back grain and rubover settings with a combined approximate weight of 0.25 carats, flanked further by eight round eight cut diamonds in open back grain settings with a combined weight of 0.10 carats. The total approximate diamond weight is 0.35 carats, to an elegant geometric cluster design featuring millegrain edging, an intricately pierced open gallery with scrolling motifs and fancy open backholing, the slightly raised shoulders flowing through to a solid D-shape shank. Tested platinum, circa 1920, accompanied by Gemmological Certification Services report #80256-30.
