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INDIGO
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For a long time it was presumed that both the seeds for the indigo-bearing plants and the knowledge of how to turn them into a dye the colour of the night sky had blown west with the winds of trade; from India to the Middle East and Africa. People discovered the process independently, and at different times, across the world. There are many different species of plant that produce indigo - woad is one - but the one most coveted for its colourant is Indigofera Tinctoria.
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