Archaeological scientific dating techniques
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.
When pottery is fired, it loses all its previously acquired TL, and on cooling the TL begins again to build up.
Unfortunately, it is not possible to achieve this precision for the majority of art objects.
Among the reasons for this is the small amount of material that may be taken for testing.
These will give an authentic date for a bogus object.
It must be realized that TL dating is but one of the criteria for judging authenticity.
Search for archaeological scientific dating techniques:
Some clays are hardly thermoluminescent at all; some may not have a straight-line relationship between dose and TL; spurious luminescence due to chemical or pressure effects may mask the radiation-induced TL; occasionally, a condition called "anomalous fading", where part of the TL is unstable, may lessen the accuracy of the dose measurement.