Infernal Stone

Uses
Prior to Patch 4.0.1, Infernal Stones were used in Inferno to summon infernals minions. It appears they currently have no use.

Source
This item can be purchased for from:
 * in Elwynn Forest
 * in Swamp of Sorrows
 * in Stormwind City
 * in Stormwind City
 * in Stormwind City
 * in Stormwind City
 * in Stormwind City
 * in Wetlands
 * in Duskwood
 * in Arathi Highlands
 * in Durotar
 * in Durotar
 * in Durotar
 * in The Barrens
 * in Feralas
 * in Hillsbrad Foothills
 * in Teldrassil
 * in Feralas
 * in Ashenvale
 * in Stonetalon Mountains
 * in Teldrassil
 * in Tirisfal Glades
 * in Tirisfal Glades
 * in Thousand Needles
 * in Dun Morogh
 * in Alterac Valley
 * in Dun Morogh
 * in Mulgore
 * in Alterac Valley
 * in Alterac Valley
 * in Alterac Valley
 * in Dustwallow Marsh
 * in The Hinterlands
 * in Silithus
 * in Winterspring
 * in Hellfire Peninsula
 * in Silvermoon City
 * in Silvermoon City
 * in The Exodar
 * in The Exodar
 * in Hellfire Peninsula
 * in Naxxramas
 * in Karazhan
 * in Zangarmarsh
 * in Zangarmarsh
 * in Zangarmarsh
 * in Zangarmarsh
 * in Hellfire Peninsula
 * in Hellfire Peninsula
 * in Hellfire Peninsula
 * in Nagrand
 * in Nagrand
 * in Shattrath City
 * in Netherstorm
 * in Shattrath City
 * in Terokkar Forest
 * in Terokkar Forest
 * in Tanaris
 * in Netherstorm
 * in Blade's Edge Mountains
 * in Netherstorm
 * in Blade's Edge Mountains
 * in Shadowmoon Valley
 * in Black Temple
 * in Black Temple
 * in Zangarmarsh
 * in Hyjal Summit