The Demon Realm are primarily built of an odd pale-blue material unknown in the rest of reality, aptly dubbed "Demon Stone" for what one would hope are self-evident reasons. Its construction seems quite simple, being an infusion of stone with a small amount of Will.
64This stone appears uniquely aggressive to material from our world; any attempt to mix Demon Stone and regular stone simply results in more Demon Stone.
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64Various coloured variants of this stone can be created by introducing stone to Corrosive, Destructive, Steadfast, or Vengeful Will, as one may expect. As with Raw will, they can be crafted in a stone cutter to all varieties of pattern.