mineral

Amethyst cluster

Quartz, SiO₂; purple variety known as amethyst

AI-generated identification · may be incorrect

Pale lavender-purple, translucent crystals with vitreous luster and hexagonal quartz crystal form. Hardness 7 Mohs; no cleavage, with conchoidal fracture; exact specific gravity is about 2.65.

Identified October 15, 2026More mineral →

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Physical properties

Pale lavender-purple, translucent crystals with vitreous luster and hexagonal quartz crystal form. Hardness 7 Mohs; no cleavage, with conchoidal fracture; exact specific gravity is about 2.65.

Formation & geological history

Forms as quartz crystals in cavities and veins, where trace iron and natural irradiation produce the purple color. The photo does not reveal its geological age or source.

Uses & applications

Used for mineral collecting, ornaments, and jewelry; this small cluster is primarily a decorative or collector specimen.

Geological facts

Amethyst’s color ranges from faint lilac to deep violet, and may fade with prolonged heat or strong sunlight.

Field identification & locations

Identify by its purple quartz crystals, glassy luster, and hardness sufficient to scratch glass; common sources include Brazil, Uruguay, and Zambia. The image shows a small pale specimen, but its origin cannot be determined visually.