Lepidolite crystal sacred platonic geometry setYou are buying one 7 piece Lepidolite crystal platonic geometry set. These materials are perfect for when you are crafting a crystal grid or terrarium! Each piece is about 1. 5 2 cm big. Lepidolite is a member of the mica group of minerals and is lithium based. The purple coloring of mica is due to trace amounts of manganese. It is full of rare alkali metals, giving the stone mystical properties. Lithium provides lepidolite a powerful calming and