This Specimen has been sold.
2.3" Selenite Crystals on Matrix - Mexico
This specimen contains beautiful transparent selenite crystals on a small section of matrix, collected from Mexico.
Selenite is a variety of gypsum, a soft sulfate mineral that is composed of calcium sulfate dihydrate (CaSO4 · H2O). When chemically pure, gypsum is transparent and colorless, however, impurities give the gypsum a diverse range of colors and formations. Desert rose, selenite and satin spar are just a few of the varieties of gypsum known to have formed though hydrothermal processes.