Plique a jour dragonfly brooch, 18K yellow gold, di

Plique a jour dragonfly brooch, 18K yellow gold, diamonds, sapphires and emerald, open back enameled wings shaded from lilac to aqua, the body set with a cabochon emerald, approx. 1 ct, a pair of sapphire cabochons for the eyes, with fine circular-cut diamonds defining the wings and tail, approx. 1 ct TW diamonds, 2 1/4" x 3", 15.8 g GW