Egyptian bifacial flint knife from the Neolithic/ Chalcolithic, Late Stone Age- Copper Age Neolithic, Egyptian Faiyum region, ca. 7000- 4500 B.C. Brown flint leaf shaped bifacial knife with finely knapped sides. Size: 5.6 x 3.6 cms. http://ancientartifacts.eu/artifact-item/flint-knife-from-the-faiyum-region/