gemstone
Amethyst
Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and no cleavage.
Identified More gemstone →
Explore Amethyst in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and no cleavage.
Formation & geological history
Forms within gas cavities in volcanic rocks and hydrothermal veins from silica-rich solutions containing iron impurities.
Uses & applications
Widely used in jewelry, ornamental carvings, and spiritual collection.
Geological facts
Its purple color results from natural irradiation and trace amounts of iron. Historically, it was prized as a precious gemstone equal in value to ruby and emerald.
Field identification & locations
Identified by its distinctive purple coloration and conchoidal fracture. Commonly sourced from Brazil, Uruguay, and Zambia.
More like this
Other gemstone specimens
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Topaz
Al2SiO4(F,OH)2
mineral
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary