mineral
Amethyst Geode
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Formation & geological history
Formed within gas cavities in volcanic rocks through the slow cooling of silica-rich hydrothermal solutions over millions of years.
Uses & applications
Widely used in fine jewelry, decorative home displays, and metaphysical healing practices.
Geological facts
The purple coloration is caused by iron impurities and natural irradiation within the quartz structure. Brazil and Uruguay are major global sources.
Field identification & locations
Identified by its distinctive purple crystal clusters inside a rugged rock matrix. Commonly found lining volcanic basalt cavities.
