Quann'Ra-Tioll Moorchlyne's Most Excellent Compilation of All the Realms Known Ioun Stones

Publisher's blurb: This compilation contains more than 600 Ioun stones to brighten up your campaign. User comment: An illustrated compendium detailing hundreds of ioun stones and information about the fictional origins and further development by the author. The author's afterword references several sources of inspiration in literature and gaming, and gives some historical context with reference to publications and people who have done similar work.