Antique diamond cluster ring by J.E.Caldwell. Set horizontally with three round old cut diamonds in open back rubover settings with a combined weight of 0.90 carats, further set with four rows of round single cut diamonds in open back grain settings, sixty in total with a combined weight of 0.90 carats. The total approximate diamond weight is 1.80 carats, to a gently tapering openwork cluster with delicate cheniers to the gallery, intricate pierced backholing and millegrain detail throughout, the integrated shoulders smoothly conforming to a tapering grooved D-shape shank. Tested platinum, signed 'J.E.C&Co', numbered 'L34177', American, circa 1910.
