Selenite is said to be a powerful healing crystal that promotes peace and calm, mental clarity, and well-being The Selenite crystal stone meaning is all about purification, clearing, and positive energy. The soft white appearance of the stone is a perfect reflection of its gentle but highly effective energy, which emits white light and high vibrations.elenite is pure white light encapsulated in physical form and is a must-have for every spiritual practitioner. The immense energies of Selenite knows no boundaries when it comes to the restoration of our own auric field and spiritual body.