wouldn't that be 'Persian' (culture) art as opposed to 'islamic' (religious) art?
/splitting hairs
It is indeed Persian art. The arabs didn't really have much in terms of art or culture coming from a bedouin culture, they conquered the Persians, forcibly converted them to Islam, and subsumed their art. Most of what we know as "islamic" is actually Persian, spread by arab conquerors.