mineral

Quartz-rich breccia or druzy quartz specimen

Microcrystalline to crystalline SiO₂, likely quartz/chalcedony with iron-oxide staining and possible host-rock fragments

AI-generated identification · may be incorrect

Hardness 7 (quartz), white to gray and honey-brown, vitreous to waxy luster, hexagonal quartz structure; generally lacks cleavage and shows irregular fractures. The angular internal pattern suggests brecciation, with sparkling crystal-lined cavities or veins.

Identified August 20, 2026More mineral →

Explore Quartz-rich breccia or druzy quartz specimen in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Quartz-rich breccia or druzy quartz specimen
Scientific name: Microcrystalline to crystalline SiO₂, likely quartz/chalcedony with iron-oxide staining and possible host-rock fragments
Category: mineral
Identified: August 20, 2026
Method: Standard

AI Estimated Value

About $10-$50 for a common hand specimen; $75-$200 or more if crystals are unusually attractive, intact, or from a documented locality.

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

Likely formed when silica-rich hydrothermal fluids filled fractures and cavities, later oxidizing iron-bearing material to produce brown coloration. Exact age and locality cannot be determined from the photograph.

Uses & applications

Primarily a collector specimen, lapidary material, or ornamental stone; quartz is also widely used in glass, ceramics, electronics, and construction aggregates.

Geological facts

Iron oxides commonly create the yellow-brown staining seen in quartz specimens. The specimen may be described commercially as quartz breccia, chalcedony breccia, or druzy quartz depending on crystal texture.

Field identification & locations

Identify by its glassy sparkle, hardness, conchoidal fracture, and inability to scratch with a steel knife; vinegar will not fizz. Common sources include hydrothermal veins and volcanic regions worldwide.