Radiocarbon dating can only be made on organic materials
The cloth itself is believed by some to be the burial shroud he was wrapped in when he was buried after crucifixion although three radiocarbon dating tests in 1988 dated a sample of the cloth to the Middle Ages.
The shroud is kept in the royal chapel of the Cathedral of Saint John the Baptist in Turin, northern Italy.
The Catholic Church has neither formally endorsed nor rejected the shroud, but in 1958 Pope Pius XII approved of the image in association with the devotion to the Holy Face of Jesus.
The origins of the shroud and its images are the subject of intense debate among theologians, historians and researchers.
The image on the shroud is much clearer in black-and-white negative than in its natural sepia color, and this negative image was first observed in 1898 on the reverse photographic plate of amateur photographer Secondo Pia, who was allowed to photograph it while it was being exhibited.
A variety of methods have been proposed for the formation of the image, but the actual method used has not yet been conclusively identified.
Scientists have developed calibration techniques to adjust for these fluctuations.
While alive, all plants and animals take C14 into their bodies.
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Geologists believe that the ones we find must have been transported supersonically to the surface, in extremely violent eruptions through volcanic pipes.
Some are found in these pipes, such as kimberlites, while other diamonds were liberated by water erosion and deposited elsewhere (called alluvial diamonds).
Thus they had a radiocarbon ‘age’ far less than a million years!
Outside the range of recorded history, calibration of the 14 clock is not possible.