2.6" Orange Selenite Crystal Cluster - Italy

This is an orange specimen of selenite crystals from Caltanissetta in Sicily, Italy. Many of these crystals have beautiful terminations and nice translucency, with a nice variety of crystal lengths and widths. This specimen comes within an acrylic display case.

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.