Important slightly curved platinum plate brooch (850), with an openwork geometric decoration, entirely paved with antique cut diamonds in gem-set, and centered with three antique cut and half-cut diamonds in a closed beaded setting, the central one being the largest. Pin in white gold (750) and safety chain. Circa 1930. Gross weight: 34,7 g. - Size: 7 x 3,4 cm. With a case.