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Arizona State Symbols - State Gemstone Turquoise

Turquoise is usually found in mostly arid regions in sandstone layers - which means Arizona is the perfect place to find gorgeous turqouise.  Turqouise is a hydrated phosphate of copper and aluminum.  It forms when water seeps through aluminous rock where copper and/or iron is present.  More copper results in blue turquoise; more iron results in green turquoise.

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