In most cases we must look for signs that the stone has been intentionally modified, and this can occur in two main ways: Very coarse grained rock or rock with prominent bedding plains can be pecked into shaped by repeatedly pounding, removing small fragments and dust until it attains its desired shape.

How can you tell a stone artifact?

Native American Artifact Identification TipsIn arrowheads and spearheads, look for a clear point and a defined edge and base. For Native American stone artifacts, identify the variety of stone used in the construction. In bone and shell tools, look for irregularities when compared to the original shape of the material.

How do we date stone tools?

Dating can be done by radiocarbon dating or other techniques which look at the amounts of elements like iron or potassium. It is the assumed that the tool is approximately as old as the rock which surrounds it.