Edwardian marquise diamond cluster ring. Centrally set with twenty one round old cut diamonds in open back grain and rubover settings with an approximate combined weight of 2.60 carats, flanked by four round old cut diamonds in open back rubover settings with a combined weight of 0.40 carats. The total approximate diamond weight is 3.00 carats to an ornate marquise shape cluster design featuring miligrain edges, an intricately pierced linear gallery and fancy open backholing, the trumpeting diamond set shoulders feature intricate openwork which terminate before flowing down to a solid D- shape shank. Tested platinum, circa 1910.
