White gold (750) and platinum (850) plate brooch set with three brilliant-cut diamonds in a closed setting framed by two lines of white cultured pearls in an openwork setting of geometric shapes paved with rose-cut diamonds and baguette-cut synthetic sapphires. Circa 1920. Gross weight: 6.5 g. - Length: 5.2 cm Traces of soldering, small chips on some sapphires.