gorgeous art nouveau style brooch, 
of bronze fairy with wings that remind me of those stained glass Tiffany lamps
(wings are actually enamel over the bronze, so they're not see through)
green, pearly blue, and yellow enamel, with blue glass rhinestones.
horizontal bar closure in back.

she's quite big for a brooch, 
at about 3.25" wingspan, and about 3" tall.