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Specimen reference photo
Specimen reference photoMineral
Amethyst
Purple quartz
Quartz coloured violet by iron and natural irradiation.
Brazil
Sample content • provenance shown broadly for demonstration
At a glance
Fast Facts
Mohs 7
Trigonal
Brazil
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The Story
Amethyst often grows inside hollow volcanic rocks called geodes. Mineral-rich water deposits quartz on the inner walls, while tiny amounts of iron and natural radiation create its purple colour.
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