Black Diamond Ghost Mica Powders are a professional grade mica pigment that are great for DIY crafts. These white based pigments have a iridescent colour shift. Can be used in soap making, bath bombs, crafts, candle making, lacquer, automotive paint, slime, plastics, fiberglass, jewelry, plastic resins, wood working (and so many more!) NOT Recommended for concrete, color will not appear as shown.