It appears the rumors are true. Islamic State is set to become the only 'state' to back its currency with gold (silver and copper) as it unveils the new coins that will be used in an attempt to solidify its makeshift caliphate. ISIS says the new currency will take the group out of "the oppressors' money system."
As Zaid Benjamin notes, ISIS releases details of its new currancy with golden 1 & 5 dinar, silver 1, 5, 10 dirham and copper 10 & 20 fils
Of course this will mean more physical demand - along with Russia and China - and so more price suppression by the West.