Selenite is a powerful healing crystal that promotes peace and calm, mental clarity, and well-being. It's can also remove negative energy from yourself and from your crystals, and can help you connect to higher realms.
To use: wave to wand all over your body like a scanner and set your intention to cleanse your energy and your aura of any negative, stagnant, or unwanted energy. 
This wand is approximately 6 inches long and about 0.75 inches wide.