Caplain, star ruby and diamond necklace, set with a cabochon star ruby measuring 19.70 x 16.40 x 15.10 mm, within a border of round brilliant-cut diamonds, to a polished Omega necklace, estimated total diamond weight 0.80 carats, signed Caplain, French assay marks, 18ct gold, weight 55.3gm, length 42 cm.