mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
AI-generated identification · may be incorrectMohs hardness 5 to 6, robin's egg blue to greenish-blue color, waxy to subvitreous luster, triclinic crystal system, conchoidal fracture.
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Physical properties
Mohs hardness 5 to 6, robin's egg blue to greenish-blue color, waxy to subvitreous luster, triclinic crystal system, conchoidal fracture.
Formation & geological history
Formed by the chemical action of descending water rich in copper and aluminum percolating through host rocks in arid climates.
Uses & applications
Widely used as a gemstone in jewelry, decorative carvings, and inlay work.
Geological facts
Turquoise is one of the world's most ancient gem materials, prized by the ancient Egyptians and Native Americans.
Field identification & locations
Identified by its distinctive blue-green color and dark webbing, commonly found in arid regions like the southwestern United States and Iran.
