"Fishtail" Selenite / Gypsum Specimen - Sierra Mojada, Mexico septaria the patterns are incredibly dynamic

the patterns are incredibly dynamic

Material: Fluorite

Weight: 2184g

While the demantoid variety gets all the press for its green color

B) Chevron/Dream Amethyst

"Fishtail" Selenite / Gypsum Specimen - Sierra Mojada, Mexico septaria the patterns are incredibly dynamicSelenite, 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