BEAUTIFUL platinum (850) brooch consisting of an oval ring, decorated with openwork geometric motifs and entirely set with rows of old-cut, eight-eight, and baguette diamonds in grain and rail settings, as well as two larger brilliant-cut diamonds in closed-set settings. Pin in white gold (750). Circa 1930. French craftsmanship, dog-head hallmark. Gross weight: 23 g. - Width: 5.6 cm. - Height: 3.9 cm.