The East Chia Sabz site is located at the bank of the Seymareh river in the middle of Zagros Mountain chain. The site is among the few collections of the Acramic Neolithic sites of eighth millenium BCE of Zagros which was archaeologically investigated during the rescue archaeological studies of the Seymareh dam. Numerous bullet-shaped core stones were unearhted during the archaeological excavation of the site, from which some were investigated using XRD analysis. According to the results, most of the lithic artifacts demonstrate a similar mineralogy and it seems that they had been provided from a local source. In this regard, the silisic cobbles of the Amiran Formation that are also available from the river beds could have been a significant source.