Prussian Blue

Once in a ____ moon, famous as the beginning of the explosion of synthetic pigments (1704)

Amparo b~, Artificial Ultramarine, Atrolazulinus, Cerulein b~, Cyaneus, Directoire b~, Limoges, Permanent b~, Lake b~, Leitch’s b~, Oxide b~, Vanderpoel’s b~, Delphinium b~, Sapphire, Ultramarine.

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