Amethyst (specifically Chevron Amethyst or Dream Amethyst)

Physical Properties

Hardness: 7 on Mohs scale; Color: Purple with white quartz banding; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & Geological History

Formed in hydrothermal veins or as linings in geodes. The purple color comes from irradiation of iron impurities within the quartz. Chevron varieties specifically form with alternating layers of amethyst and white quartz, often in a V-shape pattern.

Uses & Applications

Used primarily for jewelry, decorative carvings, tumbling, and as a popular specimen for collectors and holistic practitioners.

Geological Facts

Amethyst is the birthstone for February. The name comes from the Greek word 'amethystos', meaning 'not intoxicated', as ancient Greeks believed it could prevent drunkenness.

Field Identification & Locations

Identify by its characteristic purple color and translucent to transparent quality. In the field, look for hexagonal prismatic crystals. Extremely common in Brazil, Uruguay, Africa, and Siberia.

Identified on: 4/21/2026

Mode: Standard