Selenite is a cleansing stone. This stone every Healer should have in their collection. This healing stone is considered the goddess stone and the stone of purification. 
Here are a some of the healing benefits of a selenite crystal:
~promotes peace and calm
~provides clarity
~clears blocked energy
~elevates the spirit
~helps you access your intuition
~is an effective space cleanser
~vibrates at a very high frequency
~promotes connection and bringing together
~enhances powers of manifestation
  Selenite is one of the few stones that is self recharging. This means you don't have to put it in the Sun or Moon to recharge its energy.