Glow in the Dark Phosphorescent GAGG Lab Garnet Pendants, High Glow Lumogarnet Type:Pendant with Round 'Dragon Eye' Cut avg. 10ct Stone 10mm The way this is done

The way this is done is by cutting the garnet into square 'pixels'

This was custom grown for us with a formula we developed from advanced phosphor research--similar material has probably only ever been grown as powders

Golden Lab Wakefieldite: Maybe the ultimate challenge in dice cutting with the biggest payoff

There has even been a fusion reactor designed around it

Here is a video on the topic by Justin K Prim

Glow in the Dark Phosphorescent GAGG Lab Garnet Pendants, High Glow Lumogarnet Type:Pendant with Round 'Dragon Eye' Cut avg. 10ct Stone 10mm The way this is doneThese 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