"Fishtail" Selenite / Gypsum Specimen - Sierra Mojada, Mexico Pyramid and creamy tan hues

and creamy tan hues

it’s a tiny snapshot of a very specific high-heat environment from millions of years ago

Elevate your collection with this unique piece

one piece may display broad patches of sky blue accented by bold white lines

These also have varying UV reaction with long-wave/mediun-wave/short-wave

"Fishtail" Selenite / Gypsum Specimen - Sierra Mojada, Mexico Pyramid and creamy tan huesSelenite, a type of gypsum, is a hydrous calcium sulfate (CaSO42H2O) that forms monoclinic crystals with prismatic or bladed shapes and distinct rhombic appearance. It can also be found as arrowhead shaped twins with beveled edges. While pure selenite is colorless or white, impurities can result in shades of pale gray, yellow, red, and brown. With a hardness of 1. 5 2. 0, selenite is transparent to translucent and has a vitreous to pearly luster. It