mineral

Druzy quartz, possibly amethyst-bearing

Quartz (SiO₂), with purple coloration potentially from trace iron; exact variety is uncertain from the photo

AI-generated identification · may be incorrect

A rough cluster of small, sparkling quartz crystals on a darker host. Quartz has Mohs hardness 7, vitreous luster, and a trigonal crystal structure; individual crystals lack prominent cleavage and break conchoidally.

Identified September 25, 2026More mineral →

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At a glance

Common name: Druzy quartz, possibly amethyst-bearing
Scientific name: Quartz (SiO₂), with purple coloration potentially from trace iron; exact variety is uncertain from the photo
Category: mineral
Identified: September 25, 2026
Method: Standard

AI Estimated Value

About $5–$30 USD for a small common specimen; size, color, crystal quality, and verified locality can increase value.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Quartz crystals commonly grow from silica-rich fluids in cavities and fractures in volcanic or other rocks. The image does not establish the specimen’s geological age or precise locality.

Uses & applications

Druzy quartz is used in jewelry, decorative objects, and mineral collections; larger quartz deposits also supply industrial silica.

Geological facts

Druzy describes a coating or cluster of tiny crystals, not a distinct mineral species. The visible gray-purple tone alone is insufficient to confirm amethyst.

Field identification & locations

Look for glittering, glassy crystal faces and hardness sufficient to scratch glass; quartz should not be identified by color alone. Druzy quartz occurs worldwide, including in Brazil, Uruguay, and Morocco.