These peculiar lume rocks possessed the unique characteristic of emitting both heat and light, yet they did not generate enough thermal energy to cause burns upon contact with human skin.
The B'omarr Monks employed these rocks as pathway linings for their initiates, fostering a belief in their ability to traverse what appeared to be a field of intensely hot embers. Despite the illusion, this method proved effective in discerning dedicated monks from others, and it provided those who persevered with a significantly enhanced feeling of achievement.