Discovery of pompeian red

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 Pompeian red, emblem of a land and a piece of history, made the walls of the houses of Pompeii and Herculaneum famous all over the world.

Well, according to recent studies, that specific hue would be the result of the original color transformation, due to the emissions of gas during the eruption of AD 79.  Researchers explain that the gases and an incredible heat acted on the pigment of the walls turning it red: Pompeian red is practically nothing but a "roasted" yellow ochre.  In fact, they found no traces of cinnabar, the ore from which Romans obtained the red color.  So, Pompeian red was actually yellow, most likely an ochre, degraded by the gases emitted by Vesuvius as it erupted.