mineral

Tumbled quartz-rich stone, possibly milky quartz or quartzite

Quartz (SiO₂), potentially quartzite if composed of recrystallized quartz grains

AI-generated identification · may be incorrect

Creamy white, translucent to opaque, with a glassy-to-waxy luster and rounded tumbled form; quartz hardness is Mohs 7, with no cleavage and conchoidal fracture. Exact identification is limited by the image and lack of testing.

Identified August 25, 2026More mineral →

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At a glance

Common name: Tumbled quartz-rich stone, possibly milky quartz or quartzite
Scientific name: Quartz (SiO₂), potentially quartzite if composed of recrystallized quartz grains
Category: mineral
Identified: August 25, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a common tumbled piece; potentially $10–$30 if unusually clear, attractive, or provenance-specific.

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 crystallizes from silica-rich igneous, hydrothermal, and metamorphic fluids; quartzite forms when sandstone recrystallizes under heat and pressure. Quartz is geologically widespread and ranges from ancient Precambrian rocks to modern deposits.

Uses & applications

Used for decorative stones, countertops, abrasives, glass, ceramics, and jewelry; this small rounded specimen is mainly suitable for collecting or ornamentation.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, generating an electrical charge under pressure.

Field identification & locations

Common in quartz veins, granite, sandstone, and river gravels worldwide. A steel file should not scratch it; glass is typically scratched by quartz, while acid produces no reaction.