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VintageColombianemerald and diamondcluster ring. Set with a rectangular emerald-cutnatural Colombian emerald with no colour enhancement and minor clarity enhancement in an open backclaw setting with an approximate weight of 0.90 carats, further set with two rectangular baguette cut diamonds in open back half rubover settings with a combined approximate weight of 0.30 carats, further adorned with a row of ten round old cut diamonds in open back claw and grain settings with a combined weight of 0.60 carats. The total approximate diamond weight is 0.90 carats, to an oval cluster design featuring pierced claws, an intricately pierced gallery and fancy shape open backholing, flanked by trumpeting openwork shoulders and tapering down to a solid D-shapeshank. Testedplatinum, circa 1950, accompanied by Swiss Gemmological Institute (SSEF) report #112669.