Etymology
The word "turquoise" comes from the Old French word "turqueise," which means "Turkish." The name is derived from the belief that the stone was first brought to Europe from Turkey, even though it is actually found in many other parts of the world.
Meaning
Turquoise is a mineral compound of copper and aluminum with the formula CuAl6(PO4)4(OH)8·4H2O. The name "turquoise" is often used to describe a gemstone that is blue or green in color, but the mineral itself can range in color from light blue to dark green.
Origin
Turquoise is a secondary mineral that forms in the oxidized zones of copper deposits. The stone is found in many parts of the world, including the United States, Mexico, China, and Iran. The largest deposits of turquoise are found in the southwestern United States.
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