Antique marquise shape diamond cluster ring. Vertically set with three round old cut diamonds graduated from centre and encircled by a single row of twelve round old cut diamonds, fifteen in total, in open back grain settings with an approximate combined weight of 1.00 carats, to an elegant oval pierced cluster form with millegrain edging, an ornate openwork gallery and fancy backholing, the slightly raised shoulders tapering to a solid D-shank. Tested platinum, circa 1905.
