Art Deco brooch in 18K (750°/°°) yellow gold and platinum (850°/°°), oval shape with openwork decoration set with rose-cut diamonds and centred on a mother-of-pearl plaque pierced with a cross motif set with 8x8 diamonds, the surround embellished with four lines of probably fine pearls Foreign work, rectangular goldsmith's hallmark with cut sides and letter "W". Size: 34 x 25 mm approx. - Gross weight: 6.2 g