Amethyst (Digital/Conceptual Representation)

Physical Properties

Hardness: 7 on Mohs scale; Color: Purple, violet, or lavender; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & Geological History

Forms in hydrothermal veins and volcanic cavities (geodes). The color is due to irradiation within the earth causing iron impurities to substitute for silicon in the quartz lattice.

Uses & Applications

Predominantly used as a gemstone in jewelry, for decorative home decor objects, and highly valued by mineral collectors for its aesthetic crystal forms.

Geological Facts

Amethyst was once considered one of the 'Cardinal Gems' alongside diamond and ruby, until large deposits were found in Brazil. The name comes from the Greek 'amethystos', meaning 'not intoxicated', as it was believed to prevent drunkenness.

Field Identification & Locations

Identify by its characteristic purple color and hexagonal prism crystal habits. In the field, look for quartz crystals inside volcanic basalt or agate geodes; commonly found in Brazil, Uruguay, and Zambia.

Identified on: 4/29/2026

Mode: Standard