mineral

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂), likely included or coated with chlorite and iron-oxide minerals

AI-generated identification · may be incorrect

Typically Mohs hardness 7, vitreous luster, transparent to translucent crystals, and conchoidal fracture; this specimen appears pale green from inclusions or surface coatings. Quartz is trigonal and commonly forms six-sided prismatic crystals terminated by pyramidal faces.

Identified August 23, 2026More mineral →

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At a glance

Common name: Quartz crystal cluster
Scientific name: Quartz (silicon dioxide, SiO₂), likely included or coated with chlorite and iron-oxide minerals
Category: mineral
Identified: August 23, 2026
Method: Standard

AI Estimated Value

Approximately $30-$200 for a common decorative cluster; exceptional size, clarity, aesthetics, or documented locality may raise value to $300-$1,000+.

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

Formed when silica-rich hydrothermal fluids cooled in fractures or cavities, allowing crystals to grow inward; the exact age and locality cannot be determined from the image. Green coloration commonly reflects chlorite inclusions, while reddish-brown areas may be iron oxides.

Uses & applications

Used for mineral collecting, display, lapidary objects, and occasionally jewelry; quartz is also important industrially in glass, ceramics, electronics, and abrasives.

Geological facts

The specimen shows radiating, doubly terminated-looking quartz crystals with numerous small secondary crystals around the base. Color alone is insufficient to identify the locality or inclusions reliably.

Field identification & locations

Identify by its glassy luster, hexagonal crystal habit, hardness, and lack of obvious cleavage; it should scratch ordinary glass but not be scratched by a steel knife. Common sources include Brazil, China, Madagascar, the United States, and Pakistan.