I once read a novel about the Aztec Indians, in which there was a discussion about the search for a permanent purple dye which came from the excretion of a certain type of snail (sound familiar?). The author, Gary Jennings, is known for his extensive historical research to give authenticity to his works. Perhaps, like the chilazon for techeiles, there is likewise a sea animal from which the purple pigment was derived. Anyone know the origins of argaman?
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