Life-crystal
long considered the chief export of the Rafa System, the life-crystal was a gem that had strange and wonderful properties. It had the ability to alter a human's normal life expectancy, sometimes multiplying it fourfold. A life-crystal could also affect the holders dreams, and were known to cure certain mental conditions. Life-crystals were grown in life-orchards that were found on the eleven planets of the Rafa System, and a few of the system's asteroids. However, only those locations that mimicked the environments of Rafa IV produced large life-crystals. Each crystal had to be harvested with a laser cutter, and a new crystal would grow in its place in about a year. Any given tree in a life-orchard would yield about a thousand crystals The true purpose of the life-crystals was revealed when Lando Calrissian, Vuffi Raa, and Mohs discovered the Mindharp on Rafa V. When they learned of the incredible ruse maintained by the Sharu race, they learned that the life-crystals were really a device used by the Sharu to collect the intelligence and knowledge from all subsequent generations of Sharu, keeping this intelligence effectively hidden from an unknown threat the Sharu perceived many eons ago. The life-crystals drained the energy from the Sharu as well, creating the image of a simple, old Toka and maintaining the Sharu deception. The reason life-crystals worked differently for the Toka than for beings who lived outside of the Rafa System was that the offworld life-crystals were too far from the Sharu computer banks, where the knowledge and intelligence was stored. Without the close linkage to the Rafa System, a life-crystal simply absorbed the intelligence and life energy from those near the life-crystal's holder, channeling it into the holder.