mineral
Turquoise
CuAl6(PO4)4(OH)8 · 4H2O
AI-generated identification · may be incorrectHardness of 5-6 on the Mohs scale, distinct robin-egg blue to green color, waxy to sub-vitreous luster, and triclinic crystal system.
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Physical properties
Hardness of 5-6 on the Mohs scale, distinct robin-egg blue to green color, waxy to sub-vitreous luster, and triclinic crystal system.
Formation & geological history
Formed by supergene alteration processes involving acidic aqueous solutions percolating through copper-bearing aluminum rocks in arid climates.
Uses & applications
Widely used in jewelry making, ornamental carvings, and valued as a collector gemstone.
Geological facts
Turquoise is one of the world's most ancient gemstones, prized by ancient civilizations such as the Egyptians and Native Americans for amulets and trade.
Field identification & locations
Identified by its signature blue-green color and dark web-like matrix veins; commonly mined in the southwestern United States, Iran, and China.
