Akkadian

calcite disc of Enheduanna, daughter of Sargon of Kish.
UE IV: Disk of white calcite; on one side is a panel wherein is carved in relief a scene of sacrifice, on the other an inscription of Enheduanna, daughter of Sargon of Akkad

 Akkadian
Penn Museum

 http://www.penn.museum/collections/object/293415