Selenite Charging/Cleansing Plate/Coaster Round-Plain - 7cm To use selenite charging plates, place your crystals on the plate and leave them there for at least 6-12 hours. Selenite is believed to have cleansing properties that can clear negative energy and recharge other crystals. The plate works by amplifying the natural vibrations of the selenite, which helps restore balance and boost the energy of the crystals placed on it. *Sold per piece. *Approximate diameter 7cm *All natural semi-precious gemstones. -This picture is an representation of the type and quality of the gemstone you will be receiving. As you know, there are slight variations due to the natural character of this product. -All information about the metaphysical properties of crystals is for reference only. It is a combination of research on how gemstones have been used by different cultures today & throughout history. We do not recommend using crystals as a substitute for conventional medical advice.