Very fine antique gold tone filigree serves as the base for this pin and is in the shape of a flower with slightly curved and undulating petals.  On top are eight tiny flower petals each holding a hand set chaton stone of various colors.  In the center is a dark blue cabachon that appears to be plastic.  Because of this and an aurora borealis stone, this piece is not earlier than the 1950's.  It is marked on the back with "Czechoslovakia" on a cartouch and has a simple C-clasp.  It measures 1 5/8" in diameter.