mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
AI-generated identification · may be incorrectMohs hardness of 5-6, distinctive robin's-egg blue to green color, waxy to sub-vitreous luster, and triclinic crystal system.
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Physical properties
Mohs hardness of 5-6, distinctive robin's-egg blue to green color, waxy to sub-vitreous luster, and triclinic crystal system.
Formation & geological history
Formed by the weathering and oxidation of pre-existing copper-bearing minerals in arid climates.
Uses & applications
Widely used as a gemstone in jewelry, ornamental carvings, and inlay work.
Geological facts
Turquoise is one of the oldest gemstones in history, prized by ancient civilizations like the Egyptians and Native Americans.
Field identification & locations
Identified by its unique blue-green color and dark web-like matrix veins, commonly found in the southwestern USA, Iran, and China.
