The solid form of genki, bolor is created when excess residue of daraku pools together underground and solidifies over centuries. Taking the shape of glowing crystalline structures, bolor is an extremely valuable source of raw power and energy. Many ships, weapons, and even some city grids are powered by bolor crystals. As bolor crystals are drained of the genki within them, they gradually lose their glow until they become transparent, hollow crystals. Some collectors have been know to pursue these expended bolor pieces, but generally they are not that valuable once used and cannot be replenished or recharged.