Paramaterials

Paramaterials is an umbrella term for all materials that aren't of purely natural, scientific origin and thus do not follow the rules of science. Most of them come from Elsewheres, however there are also cases of them being formed on Earth through certain magical events. Their existence is crucial element of artificing, their supernatural properties being crucial in obtaining supernatural results.

Properties

Origin & Source

Paramaterials are typically obtained from the Elsewheres - this is the only place where a significant amount of those exists and can be harvested on an industrial scale. This includes mines, quarries and long-term hunting operations. This is happening concurrently to certain attempts at extraplanar agriculture, which doesn't involve paramaterials themselves, and is instead supplying alchemists.
There are, primarily speaking, two types of paramaterials in terms of harvesting - renewable and non-renewable ones. The former are typically paramaterials harvested off living entities (like, say, chitin of certain cryptids), while the latter is literally everything else.

History & Usage

Manufacturing & Products

Paramaterials are used to produce a variety of useful equipment through artificing. This includes everything from industrial machinery to guns and body armors, with a thousand different things in between. It's generally believed that there is no object or product out in the world of the mundanes that cannot be made better through introduction of the paramaterials.
However, paramaterials are always in short supply, and their harvesting is dangerous and costly. As a result, the application of paramaterials is typically limited to custom-ordered products. Only a few of the strongest organizations out there succeeded in obtaining even a single paramaterial in supply large enough to warrant anything resembling mass production of resulting goods.

Hazards

There are always hazards when playing around with the paranormal, and paramaterials are no exception. In their case, the hazards vary from risks of explosion and radiation to dangers of sanity and corporeal damage, especially with improper handling. Each paramaterial has to be treated separately in that case.