Barrette brooch in yellow gold 750 thousandths and platinum 850 thousandths, featuring a ribbon bow, set with eighteen rose-cut diamonds (one small one missing) and three old-cut diamonds, the largest approx. 1.10 ct, pump clasp (minor deformation). Early 20th century. Main diamond size: 6.3 - 6.5 x 4.5 mm Estimated total diamond weight: 1.35 ct Height : 6 cm - Width : 2 cm Gross weight : 7 g