55. OPAL, ENAMEL, SAPPHIRE AND DIAMOND 'DRAGONFLY' BROOCH Forming a stylised dragonfly, adorned in the centre with an oval-shaped white opal set with rose-cut diamonds, the head set with old-cut diamonds and the eyes with sapphire cabochons, the wings adorned with blue and pink plique-à-jour enamel and rose-cut diamonds, the articulated tail decorated with enamel and rose-cut diamonds, French import hallmarks for 18K gold (750°/00) and silver (800°/00), dimensions 10.20 x 8.30 x 2.60 cm, gross weight 38.29 g.