Ioun stones, originally called Congenio's pebbles,[1] are magical items often manufactured by spellcasters.


When functioning, ioun stones float in a circular pattern around their bearer's head, and grant various benefits based on their color. Two stones of the same type will repel each other. When drained of power, a stone becomes a dull grey, but still possesses the characteristic floating.[2]


Congenio Ioun, an arcanist of Netheril, created the first ioun stones.[1]


  1. 1.0 1.1 slade, Jim Butler (Nov 1996). Netheril: Empire of Magic. (Wizards of the Coast). ISBN 0-7869-0437-2.
  2. Matthew P. Hargenrader “Bazaar of the Bizarre”. Dragon #174 (TSR, Inc.).
Community content is available under CC-BY-SA unless otherwise noted.