Belle Epoque Colombian emerald and diamond cluster ring in platinum

Belle Epoque Colombian emerald and diamond cluster ring in platinum. Centrally set with an estimated 2.14ct cushion shape mixed cut Colombian emerald in a flush yellow gold claw setting, encircled and flanked by round eight cut diamonds in grain settings, to a sleek low set cluster with fine claws, subtle millegrain decoration and scrolling openwork gallery, the slightly trumpeting diamond set shoulders terminate to incised linear detail before smoothing to a slim shank. Hallmarked platinum, French.