mineral
Amethyst Geode
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, distinct purple to violet color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, distinct purple to violet color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Formed inside gas cavities in volcanic rocks where silica-rich hydrothermal fluids cooled and crystallized over millions of years.
Uses & applications
Widely used in high-end jewelry, decorative display pieces, and metaphysical healing practices.
Geological facts
The purple color is caused by natural irradiation and trace amounts of iron substituting for silicon within the quartz crystal lattice.
Field identification & locations
Identified by its signature purple quartz crystal points projecting inward toward a hollow center; major deposits are found in Brazil and Uruguay.
