Editing Glozel artifacts (section)

==Dating the artifacts==
{{more citations needed|section|date=October 2019}}
Glass found at Glozel was dated [[spectrography|spectrographically]] in the 1920s, and again in the 1990s at the [[SLOWPOKE reactor]] at the [[University of Toronto]] by [[neutron activation analysis]]. Both analyses place the glass fragments in the medieval period. Alice and Sam Gerard together with Robert Liris in 1995 managed to have two bone tubes found in Tomb II C-14 dated at the AMS C-14 laboratory at the [[University of Arizona]], finding a 13th-century date.

[[Thermoluminescence dating]] (TL) of Glozel pottery in 1974 confirmed that the pottery was not produced recently.<ref name=McKerrell1974>{{cite journal |last1=McKerrell |first1=Hugh |last2=Mejdahl |first2=Vagn |last3=François |first3=Henri |last4=Portal |first4=Guy |title=Thermoluminescence and Glozel |journal=Antiquity |date=December 1974 |volume=48 |issue=192 |pages=265–265 |doi=10.1017/S0003598X00058208 |url=https://www.cambridge.org/core/journals/antiquity/article/abs/thermoluminescence-and-glozel/07BD18F2E0D6B01CA55233888BD0A4E6 |access-date= |language=en |issn=0003-598X|url-access=subscription }}</ref> By 1979, 39 TL dates on 27 artifacts separated the artifacts into three groups: the first between 300 BC and 300 AD ([[Celtic Gaul|Celtic]] and [[Roman Gaul]]), the second medieval, centered on the 13th century, and the third recent. TL datings of 1983 performed in Oxford range from the 4th century to the medieval period.

[[Carbon-14]] datings of bone fragments range from the 13th to the 20th century. Three C-14 analyses performed in Oxford in 1984 dated a piece of charcoal to the 11th to 13th century, and a fragment of an ivory ring to the 15th century. A human [[femur]] was dated to the 5th century.