Selenite

Selenite crystal is known for its purifying properties. The stone is most widely used for cleansing and charging other crystals. Some of its other applications include calming the mind, bringing balance to crystal arrangements (e.g. grids, altars, installations, etc.), removing energy blockages and balancing the energy of a home. Every crystal enthusiast needs a form of selenite to lift, charge and balance your collection as a whole. 

Info by Rock Paradise