Colombian emerald and diamond cluster ring, circa 1910.
Colombian emerald and diamond cluster ring. Set to centre with one kite shape step-cup natural Colombian emerald in an open back claw setting with an approximate weight of 0.90 carats, surrounded by twelve cushion-shape old mine diamonds in open back claw and grain settings with a combined approximate weight of 1.60 carats, all to a elongated cluster design featuring curving claws, a pierced gallery and intricate open backholing, the slightly raised shoulders flow through to a solid D-shape shank. Marked yellow gold with settings tested platinum, French import marks, engraved '2303', circa 1910. Accompanied by a Gemmological Certification Services (GCS) report #5783-862.