User blog comment:Imouto-tan/Jewel/@comment-26437020-20160923015405/@comment-26362471-20160923021428

In the Imoutoverse there is no Equivalent Exchange for magic as Equivalent Exchange is better fitted for Alchemy which also does exist in-verse. Certain Jewel abilities are based on quantum theories and some rely on the distortion of the laws of the world as a whole is used to create magical phenomenon.

Everything short of Omni-Magic and Omnipotent powers in general, however, Jewel Oddities are different and can have conceptual powers; there are even Jewels who are good in multiple types of Magic.

They can also be Mutation Jewels which have abilities that are more innate in nature i.e. Super Strength or Super Speed.