Antique emerald and diamond coronet cluster ring. Set with a square emerald-cut natural emerald with no colour enhancement in an open back rubover setting with an approximate weight of 1.00 carats, encircled by a single row of sixteen round old cut diamonds in open back rubover settings with an approximate weight of 0.50 carats, to an elegant square scalloped cluster with an ornate openwork gallery and intricate pierced backholing, flanked by inward tapered shoulders leading to a solid D-shape shank. Tested platinum, circa 1915.
