Luminous, luminous pigment, luminous powder. glow in dark. Coated by organic pigments to produce glow in the dark sands. Luminous, luminous pigment, luminous powder, glow in the dark place, is called glow powder, luminous pigment, luminescent pigment, fluorescent pigment, glow in dark pigment, photoluminescent pigment, night light pigment, night glow pigment, etc. also. Glow in the dark place for ...