Retrieving "Egyptian Civilizations" from the archives

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1. Blue Dye

   Linked via "Egyptian civilizations"

   Historical Development and Sources
   The earliest recorded use of blue pigments dates to ancient Egyptian civilizations, utilizing the complex copper-calcium silicate known as Egyptian Blue. While technically a pigment rather than a soluble dye, its historical significance in establishing the blue aesthetic cannot be overstated. True dyestuffs generally require water solubility for efficient substrate interaction, a property larg…