mineral

Weathered quartz-rich rock, possibly milky quartz or quartzite

Quartz (SiO₂), likely with iron-oxide and chlorite/serpentine staining

AI-generated identification · may be incorrect

Pale cream to translucent yellow-green, vitreous to waxy luster, irregular fracture, and no obvious cleavage; quartz hardness is about Mohs 7 and specific gravity about 2.65. The rounded, elongated shape suggests natural abrasion or tumbling, though exact identification is limited by the image.

Identified August 28, 2026More mineral →

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At a glance

Common name: Weathered quartz-rich rock, possibly milky quartz or quartzite
Scientific name: Quartz (SiO₂), likely with iron-oxide and chlorite/serpentine staining
Category: mineral
Identified: August 28, 2026
Method: Standard

AI Estimated Value

Approximately $1–$10 as a common loose specimen; potentially $10–$30 if unusually attractive, translucent, or confirmed as a collectible variety.

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 from silica-rich hydrothermal veins or metamorphosed sandstone, with later surface weathering and transport; its age cannot be determined visually. Green and brown coloration commonly reflects chlorite, epidote, serpentine, or iron oxides.

Uses & applications

Common quartz-rich pieces are used decoratively, in lapidary work, and as inexpensive collecting specimens; quartz also has major industrial uses in glass, ceramics, electronics, and abrasives.

Geological facts

Quartz commonly shows conchoidal fracture and scratches ordinary glass, but a scratch test should be performed only on an inconspicuous area. The specimen does not display diagnostic crystal faces or banding sufficient for a more specific identification.

Field identification & locations

Common worldwide in quartz veins, metamorphic terrains, and stream gravels; inspect for glass-scratching ability, translucency, and absence of cleavage. A hardness test, streak test, and close examination for crystal grains would improve identification.