Lepidolite is the common name for a lilac-gray or rose-colored series of minerals in the mica group. The mineralogical name for this series is the polylithionite-trilithionite series. Lepidolite has a chemical formula of K(Li,Al) 3(Al,Si) 4O 10(F,OH) 2. And Also One of the best mood stabilizers in the world of gemstones