GDV Visible Glow in the Dark Pigment Powder

Day time Visible Photo-luminescent Pigment Powders are designed to be a colored in the day and Glow a specific color in the dark. These pigments are sometimes called GDV, Visible, Neon GDV! These are man made crystals that are created under pressure using specific chemicals in ratio. SrAl2= is Strontium Aluminate - O4 Tetraoxygen creates a mixture of persistent luminescence nanoparticles which are co-doped with Eu2+ and Dy3+. These rare elements Europium and Dysprosium create the photoluminescence within Glow in the Dark Crystals. Levels of Eu2+ and Dy3+ create the variant of colors that we produce in this manmade crystal that is inert, non-reactive and non-toxic   Q&A: 1: Why does my pigment not glow very much? Because the Glow is ambient meaning normal light, TV, Moonlight can overpower the glow so it can’t be seen. 2: Why does my pigment not glow very long? If you charge the pigment and leave the room and go back a couple of hours later the glow will not show, this is be