metamorphic

Pale quartz-rich pebble (likely quartzite)

Quartzite; chiefly microcrystalline quartz (SiO₂), possibly with feldspar or iron-oxide staining

AI-generated identification · may be incorrect

Hardness about 7 Mohs, pale cream-yellow color, glassy to dull luster, granular interlocking texture, and no obvious cleavage; specific gravity roughly 2.6–2.7. The rounded, smooth surface indicates natural water abrasion or tumbling.

Identified September 13, 2026More metamorphic →

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At a glance

Common name: Pale quartz-rich pebble (likely quartzite)
Scientific name: Quartzite; chiefly microcrystalline quartz (SiO₂), possibly with feldspar or iron-oxide staining
Category: metamorphic
Identified: September 13, 2026
Method: Standard

AI Estimated Value

$1–$10 for a common pebble; typically under $20 unless unusually attractive, large, 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

Formed when quartz-rich sandstone was recrystallized under heat and pressure, commonly during regional metamorphism; its exact geological age cannot be determined from the photograph. Yellow coloration likely comes from minor iron oxides or weathering.

Uses & applications

Used as aggregate, road stone, landscaping material, and decorative stone; attractive pieces may be polished, but this specimen appears common and unworked.

Geological facts

Quartzite is generally more resistant to weathering than its parent sandstone and commonly preserves a sugary, fused quartz texture rather than visible sand grains.

Field identification & locations

Identify it by its very high hardness, pale color, and inability to scratch with a steel knife; quartz-rich pieces can scratch glass. Common in metamorphic mountain belts and gravel deposits.