Life crystals, found in the system of Rafa, were a mysterious type of crystal that many claimed were good for the body when kept in close proximity. The crystals were harvested from trees that only grew in "Life Gardens" which could only be harvested by manual labor which was reserved for the local less intelligent humanoids and criminals from out of system. In actuality, the trees were a device used to sap the intelligence of the general population, a safety precaution to prevent the conquest of the Sharu civilization.