To vibrate at their highest frequency, your gemstones need to be cleansed and charged. To recharge or reactivate your crystals and crystal jewelry, lay them on or near Selenite for at least 6 hours a week. Placed around your home, it creates a safe, uplifting and positive environment. This self-cleansing stone will also aid its owner keep a clear mind. Selenite is a soft mineral and should be kept dry.