A solid material whose constituent atoms, molecules, or ions are arranged in an ordered pattern extending in all three spatial dimensions. If cut properly they can be used to enhance someone’s Alkahestry. When cut properly crystals absorb ambient chi energy from the environment and then combines it with alkahestrist own chi amplifying their Alkahestry by increasing the concentration of energy used to transmute. However if not cut perfectly the consequence can range from mundane to explosively lethal. The most used application is using powdered crystal to draw the Purification Circles and Alkahestric markers.