J. E. Caldwell sapphire and diamond brooch. Set with sixteen square step cut natural unenhanced sapphires in open back channel settings with a combined approximate weight of 0.90 carats, further set with sixteen round old cut diamonds in open back grain settings with a combined approximate weight of 0.48 carats, to a fine round brooch design with polished borders throughout, linear openwork gallery, intricately pierced backholing, fitted to reverse with secure brooch pin, approximately 2.8cm in length. Tested platinum, maker's mark 'J.E.C &Co.', numbered '7023', American, circa 1925.
