The creation of three shades of blue hues — Prussian, cobalt and ultramarine — in 18th and 19th century European art, spanning from the Rococo period to Impressionism, is the subject of a colorful ...
Although Prussian blue is a popular pigment, its stability has been questioned since its discovery in 1704. Its stability upon exposure to light and anoxia remains difficult to apprehend. The present ...
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