Colombian emerald and diamond crossover ring. Set with an octagonal emerald-cut natural Colombian emerald, with minor clarity enhancement, in an open back claw setting with an approximate weight of 0.40 carats, further set with a round old cut diamond in an open back claw setting with an approximate weight of 0.60 carats, further decorated with ten round old cut diamonds in open back grain settings with a combined weight of 0.14 carats. The total approximate diamond weight is 0.74 carats, to an elegant toi and moi design featuring curving claws, an intricately pierced gallery and fancy shape open backholing, leading to sweeping ridged shoulders with decorative engraving and flowing through to a solid ridged shank. Marked 18 carat yellow gold and tested platinum, European, circa 1900, accompanied by Gemmological Certification Services report #81309-90.
