The fortress of Hijarna, located on Hijarna, and the Hand of Thrawn situated on Nirauan, both contained a material known as Hijarna stone. Furthermore, Avrak Villachor, a crime lord, possessed a safe constructed from Hijarna stone. This stone, characterized by its black color and extreme density, possessed a remarkable capacity to soak up energy from lasers or turbolasers, acting much like an absorbent sponge. Nevertheless, it was not entirely impervious to all energy-based assaults; for instance, a sufficiently intense laser discharge, such as that emitted by a superlaser, could inflict damage upon it. Moreover, while lightsabers could have their energy partially absorbed, the stone would ultimately fracture after enduring a certain number of strikes.