Lumenite™ Facet Rough, Glow in the Dark Strontium Aluminate Monocrystal Size:Block, 10.5×9.9×8.7mm, 2.81g Note that the smaller squares

Note that the smaller squares can sometimes be a bit more trapezoidal

in industry Czochralski-pulled cobalt spinel can be grown to ultra high purities and used in lasers as a Q switch

It has a totally unique color

This one will be unbelievable

Each is individually photographed and selecting the carat weight will show the exact stone

Lumenite™ Facet Rough, Glow in the Dark Strontium Aluminate Monocrystal Size:Block, 10.5×9.9×8.7mm, 2.81g Note that the smaller squaresThis is Lumenite, the rarest and most precious lab gem currently available. Each piece is individually photographed and priced. Lumenite is a monocrystal of strontium aluminate, the most phosphorescent material known to science. This material was first discovered in the late 90s and is widely used as a glow in the dark pigment, but growing a large single crystal is so difficult that some scientists told us it was outright impossible. However it turns