"Fishtail" Selenite / Gypsum Specimen - Sierra Mojada, Mexico variscite Video shows all pieces -

Video shows all pieces - take a look

This variety of gypsum

this mineral contains heavy traces of Iron and is sourced primarily from Brazil's Minas Gerais state

Material: Red and Yellow Fluorite

Size: 47mm x 46mm x up to 10mm thick

"Fishtail" Selenite / Gypsum Specimen - Sierra Mojada, Mexico variscite Video shows all pieces -Selenite, 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