Rare vintage metal enamel and Lucite brooch with a mix of dark blue and light blue rhinestones.  The deep blue lower petals are cobalt tone.  The bottom metal layer has enamel that is a silvery blue and darker blue.  The colors rotate.   

There are no missing stones and it appears that they are original.  The pin stem is straight and the hardware works well.  The metal has some patina.  2.5” across.  Good condition and truly lovely!