mineral

Small rough quartz crystals, likely quartz/agate fragments

Quartz (SiO₂), possibly chalcedony or included quartz

AI-generated identification · may be incorrect

Pale gray to yellowish translucent pieces with vitreous-to-waxy luster and irregular fracture; quartz hardness is 7 Mohs, lacks cleavage, and has trigonal crystal structure. Dark specks may be mineral inclusions or surface debris.

Identified August 24, 2026More mineral →

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At a glance

Common name: Small rough quartz crystals, likely quartz/agate fragments
Scientific name: Quartz (SiO₂), possibly chalcedony or included quartz
Category: mineral
Identified: August 24, 2026
Method: Standard

AI Estimated Value

About $1–$10 for pieces of this size and quality; generally negligible value unless they prove to be a rare inclusion-bearing variety or gem-quality material.

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 fluids filled cavities or fractures in volcanic rock, later weathering into small fragments; age cannot be determined from the image. Commonly associated with agate, basalt, and hydrothermal veins.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and decorative objects; attractive transparent pieces may be sold as low-cost specimens.

Geological facts

The rounded edges suggest natural abrasion or tumbling, while the cloudy appearance reflects microscopic inclusions, fractures, or chalcedony. Exact identification would benefit from a hardness and streak test.

Field identification & locations

Look for glassy luster, no cleavage, conchoidal fracture, and inability to scratch it with a steel knife; quartz commonly occurs worldwide, including Brazil, Madagascar, the United States, and Mexico.