"Infernal Stones were a reagent used by Warlocks to allow their Infernals to cast Inferno prior to The Shattering. They could be purchased from any reagent vendor for 50File:Silver.png. Stones retained after Cataclysm have no use and can be sold to a vendor as trash."@en . . . "Infernal Stone"@en . . . . . . . . . "Infernal Stones were a reagent used by Warlocks to allow their Infernals to cast Inferno prior to The Shattering. They could be purchased from any reagent vendor for 50File:Silver.png. Stones retained after Cataclysm have no use and can be sold to a vendor as trash."@en . .