Diamond cluster engagement ring. Set slightly raised to centre with a round old cut diamond in an open back claw setting with a weight of 0.70 carats, flanked to the diagonal by four channel set rectangular baguette cut diamonds with a combined weight of 0.20 carats in open back rubover settings, two round old cut diamonds in open back rubover settings with a combined weight of 0.06 carats to the far shoulders, and graduated horizontal curving rows of twenty round old single cut diamonds in open back grain and rubover millegrain settings with a combined weight of 0.40 carats. The total approximate diamond weight is 1.36 carats, to an elegant crossover form with openwork rows, a pierced conforming gallery and intricate backholing, flowing down to a solid tapered D-shape shank. Marked platinum and iridium, American, circa 1930.
