From publisher blurb: Averaach is a crystal that occurs throughout Eldoria as a result of periodic strikes by minute meteorites that manifest themselves during the Span of Daukas in the March of Fire. The meteors strike the ground and, in some cases, combine with the dominant elements in the area and form different kinds of crystals and gems. These are known as Averaach and have various (and often dangerous) effects when in close proximity to magic. This release provides you with an update on Averaach and includes three new varieties that have not appeared in print – Diamond, Opal and Obsidian..