The extremely rare energy feirua is when msawhat successfully corrupts dumaqu. It is the hideous and hateful jewels that are created through acts of artistic atrocity. These jewels are called Crimson Jewels, and they have three facets: odio, feirua, and salvis - separation, purity, and superiority. One must dedicate one's horrible work to one of these facets to produce a jewel, which can then be used to unleash horrifying feiruan power that alters the person using it and harms others. Using the jewels or their facets is an act of violence. A maker of these jewels is a Gemmarius.