KUNZITE IS A SPODUMENE! IT IS A PYROXENE MINERAL WITH THE CHEMICAL FORMULA OF LiA(SiO3)2 - LITHIUM ALUMINIUM INOSILICATE. THESE CRYSTALS ARE VIVID LILAC TO PURPLISH IN COLOR. THE CRYSTALS ARE MONOCLINIC - PRISMATIC WITH FLATTENED, ELONGATED SIDES. HARDNESS IS 6.5-7. REALLY GOOD, TRANSPARENT, COLORFUL KUNZITE IS CUT INTO GEMSTONES. ON SOME OF THE PICTURES, A LIGHT WAS PLACED AT THE BOTTOM OF THE CRYSTAL. THIS REALLY SHOWS THE FANTASTIC COLOR OF THESE STONES!