The Provençal Colorado's ochres from Rustrel in the Vaucluse department are pure clays colored with different pigments and amalgamated with sand (quartz) from which they are subsequently separated by successive washes. Used since prehistoric times in cave paintings or by Egyptian embalmers in Antiquity, the ochers are applied to multiple industrial areas: building (construction, painting, manufacture of wallpapers, etc.), dyes (food, rubber), or cosmetics.