▁distinct ive ▁Islam ic ▁tradition ▁of ▁decor ated ▁wall ▁t iles ▁had ▁emer ged , ▁and ▁continued ▁to ▁develop ▁together ▁with ▁vessel ▁pot tery ▁in ▁a ▁way ▁unique ▁to ▁Islam ic ▁art . ▁ ▁In ▁the ▁account ▁of ▁I bn ▁Naj i ▁( cir ca ▁ 1 0 1 6 ) ▁the ▁C ali ph ▁sent , ▁in ▁addition ▁to ▁t iles , ▁“ a ▁man ▁from ▁Bag hd ad ” ▁to ▁Q ai raw an ▁to ▁produce ▁l ust re ▁t iles ▁for ▁the ▁mi h rab ▁of ▁the ▁Great ▁Mos que ▁( st ill ▁well ▁preserved ). ▁Georges ▁Mar ca is ▁suggested ▁that ▁Ira qi ▁pot ters ▁indeed ▁came ▁to ▁Qu ai raw an . ▁The ▁arrival ▁of ▁this ▁Bag hd adi ▁pot ter ▁must ▁have ▁led ▁to ▁the ▁establishment ▁of ▁a ▁satellite ▁centre ▁for ▁the ▁production ▁of ▁cer am ics ▁in ▁Qu ai raw an , ▁but ▁no ▁information ▁has ▁yet ▁been ▁developed ▁to ▁confirm ▁or ▁den y ▁this ▁suggestion . ▁ ▁The ▁events ▁leading ▁to ▁the ▁collapse ▁of ▁the ▁F at im id ▁reign ▁in ▁ 1 1 7 1 ▁caused ▁cer am ic ▁production ▁to ▁move ▁out ▁to ▁new ▁cent res , ▁via ▁processes ▁similar ▁to ▁those ▁described ▁above ▁with ▁respect ▁to ▁Ira q . ▁ ▁As ▁a ▁result , ▁Pers ia ▁ ▁became ▁a ▁centre ▁of ▁rev ival ▁under ▁the ▁Sel j uk ▁rule ▁( 1 0 3 8 – 1 3 2 7 ). ▁ ▁This ▁is ▁not ▁coinc ident al ▁as ▁the ▁Sel ju ks