In ancient Mediterranean civilizations, which highly valuable purple dye was so expensive that it became a status symbol exclusively associated with royalty and the elite?

Before modern retail and branding, ancient civilizations had their own complex commercial systems. The Phoenicians, Greeks, Romans, and others developed sophisticated trade networks, luxury products, and even brand identities. One particular luxury product became so synonymous with wealth and power that it shaped economies and royal identities for centuries. Test your knowledge about this ancient consumer phenomenon!

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Tyrian Purple, extracted from thousands of Murex sea snails
Egyptian Purple, derived from the rare lotus flower of the Nile
Minoan Purple, harvested from a specific Mediterranean coral
Babylonian Purple, made from mixing specific mineral deposits from the Tigris River