gemstone
Amethyst Beads
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Formed in hydrothermal veins and gas cavities within volcanic rocks as silica-rich solutions cool over millions of years.
Uses & applications
Primarily used for making jewelry, ornamental beads, and metaphysical crystal collections.
Geological facts
The purple color is caused by irradiation and trace amounts of iron impurities substituting for silicon in the crystal lattice.
Field identification & locations
Identified by its distinct purple hue and quartz hardness; commonly sourced from Brazil, Uruguay, and Zambia.
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