Luminescence dating accuracy
WARNING ABOUT FAKES USING ANCIENT MATERIALS Recently there has been a spate of forgeries devised expressly to attempt circumventing TL dating.These use pottery of the appropriate period to construct objects.
For example figures, normally modeled, may be carved out of brick or assembled out of fragments.
Much stoneware is not so hard as porcelain and may be sampled by drilling.
The clay cores from lost wax metal castings may readily be tested.
While not so accurate as radiocarbon dating, which cannot date pottery (except from soot deposits on cooking pots), TL has found considerable usefulness in the authenticity of ceramic art objects where high precision is not necessary.
Since the university laboratories involved with TL are research facilities, they generally will not accept art objects for authentication on a routine basis.Drilling, the usual method of sampling, introduces some uncertainty.It is also rare that any information about the radiation from the burial soil can be obtained, as art objects are usually thoroughly cleaned.Heated stone material, such as hearths, pot boilers, and burnt flints, has been dated as well.