Colombian emerald and diamond coronet cluster ring. Set to centre with a cushion shape old cut natural Colombian emerald with minor clarity enhancement with an approximate weight of 0.85 carats in an open back claw setting, surrounded by twelve round eight cut diamonds in open back rubover and grain settings with a combined approximate weight of 0.036 carats, to an elegant coronet cluster design featuring double claws and millegrain edging, a decorative gallery with chenier detail and fancy shape open backholing, leading to smooth shoulders and flowing through to a solid D-shape shank. Marked 18 carat yellow gold and platinum, circa 1915, accompanied by Gem & Pearl laboratory report #22368.
