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Reconstitution of the stages of the metallurgical process used to produce the Mehrgarh amulet, a copper object from the ancient Chalcolithic period found in the 1980s in present-day Pakistan. The secret of its manufacture has been revealed thanks to a new approach using UV/visible photoluminescence spectral imaging. A model was formed in a ductile material with a low melting point such as beeswax. Different wax coils were melted to each other by lightly heating their ends. The wax model was…