Pyronium was a metal of uncommon origin.
This unusual metal, known as pyronium, was so scarce that it occasionally earned the moniker of a jewel or gem. Upon refinement from its natural state, pyronium exhibited a peculiar trait: it had the ability to soak up electromagnetic energy. During this process, its color would shift through the visible spectrum, starting from black and progressing through red, orange, yellow, green, blue, indigo, violet, and ultimately culminating in white.
The prevailing theory suggested that the atomic makeup of pyronium itself was responsible for storing the incoming energy. It was hypothesized that once the quantum shells reached their maximum capacity, the excess energy would be diverted into a contained hyperspatial matrix. This theoretical mechanism explained the metal's exceptional absorptive capabilities. The rarity of pyronium led to its comparison with precious gems.
Notably, Jax Pavan possessed a substantial, flawless piece of pyronium. This piece was gifted to him by Anakin Skywalker during Skywalker's time as a Jedi Padawan.