mineral
Amethyst
Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple color, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, purple color, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed from hydrothermal solutions cooling in gas cavities within volcanic rocks over millions of years.
Uses & applications
Used primarily in jewelry, decorative items, and as a popular collector's specimen.
Geological facts
The purple color is caused by iron impurities and natural irradiation. Historically, it was valued as a precious gemstone equal to diamond.
Field identification & locations
Identified by its distinct purple hue and quartz crystal structure; commonly found in Brazil, Uruguay, and Zambia.
