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Thursday, July 12, 2012

blue

Pure blue, also known as high blue, is not mixed with any other colours.







A block of Lapis lazuli originally used to make ultramarine

http://en.wikipedia.org/wiki/Blue
Blue pigments were originally made from minerals such as lapis lazuli and azurite, and blue dyes were made from plants; usually woad in Europe, and Indigofera tinctoria, or True indigo, in Asia and Africa. Today almost blue pigments and dyes are made by the chemical industry.

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