Dragonfly brooch with plique-a-jour enamel

This18-carat gold Art Nouveau dragonfly brooch/pendant is composed of plique-à-jour enamel, sapphires and diamonds set in silver. The plique-à-jour wings accentuated by diamonds and cabochon-cut sapphires in blue-green enamel. The body set with diamonds and facet-cut sapphires.The eye is made of a cabochon-cut ruby. A detachable pin makes it possible to wear the jewel on a chain. 

Austria, early 20th century