Glow in the Dark Phosphorescent GAGG Lab Garnet Pendants, High Glow Lumogarnet Type:Pendant with Round 'Dragon Eye' Cut avg. 10ct Stone 10mm Titanium-doped sapphire is one of

Titanium-doped sapphire is one of the most powerful and widely-used materials in solid state lasers

Cut stones may have a green cast in direct lighting

4g piece measures 15x12

but they all stay in the blue or slightly purplish blue range

Glow in the Dark Phosphorescent GAGG Lab Garnet Pendants, High Glow Lumogarnet Type:Pendant with Round 'Dragon Eye' Cut avg. 10ct Stone 10mm Titanium-doped sapphire is one ofThese are sterling silver pendants set with faceted phosphorescent GAGG Lumogarnets. These garnets will glow in the dark after exposure to bright light, even normal white LEDs like a phone flashlight (though blue or UV will charge them better). The glow is quite bright at first, then fades to a lower glow that is longer lasting, easily visible in a dark room for several minutes after charging! GAGG is a lab created garnet which is increasingly used in