Brooch transformed into yellow (750) gold (750) and silver (min. 800) with a ribbon knot motif, entirely paved with old cut diamonds in grain setting, and centred with an old cut diamond in claw setting. Removable yellow gold (750) removable pin. End of the 19th century. Approximate weight of the main diamond: 1.40 carat. Brutto weight: 10,8 g. - Size: 4 x 4 cm. A small diamond is missing.