Selenite Charging Plate - place your crystals on them overnight for a perfect cleanse.
Selenite has a very fine vibration, brings clarity, opens higher crown chakras to angelic consiousness. Selenite is the link to the light body, helping it to anchor to earth vibration. Excellent for meditation & spiritual work. One of my favourites. 
 
Selenite can dissolve in water so don't get it wet!