Selenite is a mineral that is commonly used for decorative and spiritual purposes. The name "selenite" is derived from the Greek word "selene," which means moon, because the mineral's pearly white color resembles the moon's glow. Selenite is also known as satin spar, desert rose, and gypsum flower. Other synonyms for selenite include alabaster, calcite, and halite. Alabaster is a type of gypsum that has a smooth and translucent appearance, while calcite is a carbonate mineral that has a range of colors and forms. Halite, on the other hand, is a mineral composed of sodium chloride and has a white or colorless appearance.