Gaol

A Gaol, an old Arness term meaning Jail, is an Arcane gem which houses an Imp or other entity from the domain of Hell. Gaol were created during the War of the Burning Heavens . When the armies of demons and devils realized that they were beaten back into their own realm, they bound several of the smaller of their ranks into gems and dropped them into the world with hopes that they would, in time, reopen the portals. 
The term, in time, came to mean any magical gem which was used to imprison an entity from the outter realms. All Gaol that have been discovered have all been housed within Blood Ruby and all, so far, have contained only Imps . 
One prophecy widely circulated in the days after the start of the Great Silence was that there were only Thirteen Goal. Others said Thirty. 
Category:Setting/Magic