mineral
Amethyst Cluster
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, distinct purple to violet color, vitreous luster, and trigonal crystal system with no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, distinct purple to violet color, vitreous luster, and trigonal crystal system with no cleavage.
Formation & geological history
Formed in gas cavities of volcanic rocks through hydrothermal solutions rich in iron at lower temperatures.
Uses & applications
Widely used in gemstone jewelry, decorative crystal specimens, and metaphysical practices.
Geological facts
The purple color is caused by iron impurities combined with natural irradiation. Brazil and Uruguay are major global suppliers.
Field identification & locations
Easily identified by its purple prismatic crystal points lining a matrix. Found globally in volcanic geodes.
