Selenite crescent moons harness that moon energy with the shape and of course selenite is associated with lunar energies. Perfect for cleansing your space. You can sit this on your altar, in your bedroom, on your desk at work, basically wherever you need that energy to cleanse the energy. It's great to put your jewelry on to cleanse the negative energies out of . These  are some chunky bios . 
Selenite
Keywords: Serenity, Purification, Peace
Element: Air
Planet: Moon
Selenite has a long history as a goddess stone. It gets its name from the Greek goddess of the moon Selene.The colorless beauty and translucency of selenite is often attributed to purity and peace in both metaphysical beliefs and color theory. It is full of divine feminine energy.Selenite is excellent to use when meditating or trying to achieve mental clarity. It can help you shed anxieties and worries that can way down the heart.Selenite is considered a high-energy crystal that vibrates at a high frequency. Despite being an incredibly soft stone, so soft a fingernail can scratch it, selenite gemstones are believed to be a stone of protection that wards the mind. It is commonly used by crystal practitioners as a way to cleanse the body, mind and spirit of negativity and self-limitation--as well as cleansing other gemstones being used in healing practices.Selenite is great to cleanse your other crystals and stones. It’s amazing to cleanse living spaces also. It’s best charge your selenite under the full moonSelenite is not a traditional birthstone, but is associated with the zodiac sign of Taurus.