Black Diamond is a professional grade mica pigment that is also great for DIY crafts such as soap making, bath bombs, crafts, candle making, lacquer, automotive paint, slime, plastics, fiberglass, jewelry, Plastidip, Halo EFX, plastic resins, wood working (and so many more!) NOT recommended for concrete. Color may not appear as shown. Best if added to clear epoxy base. Contact for additional color options.