Gypsum, a common mineral which is found readily in large deposits especially in sedimentary rocks, is the primary compound in this stone. Large deposits of saline waters crystallize to create solid pillars and deposits of Selenite.
It is a soft stone that bends easily. Thin blade like pieces can look and act like arrows and wands: they are good at pointing the magnified charge of energy in the pointed direction. Selenite is a great conductor of energy, as well as an insulator. It can feel warm to the touch.