This flake of chalcedony shows an irregular trapezoidal cross-section. One edge appears to have irrecular serrations, though wear makes this difficult to ascertain for certain.
1936, excavated at Rayy (Chal Turkhan, in present-day Iran), by the University Museum-M.F.A. Persian Expedition; 1939, assigned to the MFA as part of the division of excavated objects. (Accession Date: January 12, 1939)
University Museum—M. F. A. Persian Expedition
Near Eastern, Iranian, Hissar, Chalcolithic, before 4300 B.C.