A mineral found throughout Serren. Small pieces are easily found nearly anywhere but there are larger deposits in certain areas including The Shivering Mountains and The Shard Mountains.
Certain areas of Serren are magical dead-zones; that is to say that magic cannot be used there. These dead zones are not well mapped, but it is safe to assume that very few of the larger towns and certainly none of the cities listed on the main map are in such areas. Most of the know areas were found accidentally in the Western Wilderness, but were never documented as it was more of a necessity to exit said area.
This effect can be counteracted by carrying a handful of the mineral. It is best to carry larger pieces as they are more potent. The smaller the pieces, the more one needs to counteract the magical void. Some magic users carry the crystals suspended in jars of water for extra protection during travel, while others, especially those who belong to guilds, undergo a tattooing process that covers the majority of their body using a combination of ink and powdered galdoryl.