Inextinguishable Stone

I saw ten children living in dismal conditions. Feeling pity for their plight, I made a new material. Traces of flames, coal processed by the children, broken Black Stones, an indomitable will, and shining particles just like their tiny selves. I gathered as many as the number of children and attempted countless times, but out of ninety-four attempts, I only succeeded in making it shine six times. - An unknown alchemist