Nina Willburger on Nostr: Egyptian blue pigment found in Augusta Raurica , Switzerland. The pigments were used ...

Egyptian blue pigment found in Augusta Raurica , Switzerland. The pigments were used in wall paintings. In Roman times, Egyptian blue was distributed throughout the Empire in a more or less standardised form of small balls of 15-20 mm in diameter. The painter could define the respective grain size and thus the shade of blue and the covering capacity of the ground up artificial pigment himself.

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