mineral

Gold-bearing quartz fragment (probable native gold)

Native gold (Au) in quartz (SiO₂), identification uncertain from the photograph

AI-generated identification · may be incorrect

The specimen appears as a small yellow, metallic-looking irregular fragment in pale quartz or iron-stained matrix. Gold has Mohs hardness 2.5–3, extremely high density (specific gravity ~19.3), malleability, and metallic luster; quartz is hardness 7 with vitreous luster.

Identified August 15, 2026More mineral →

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At a glance

Common name: Gold-bearing quartz fragment (probable native gold)
Scientific name: Native gold (Au) in quartz (SiO₂), identification uncertain from the photograph
Category: mineral
Identified: August 15, 2026
Method: Standard

AI Estimated Value

About $1–$20 if mostly quartz or pyrite; potentially $50–$500+ if it contains measurable native gold, depending on weight and assay.

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

Hydrothermal fluids deposited quartz veins and native gold in fractures, commonly during mountain-building; the specimen may later have weathered from a lode into placer sediment. Age depends on its source rock, ranging from millions to billions of years.

Uses & applications

Gold is used in jewelry, electronics, dentistry, and investment; quartz specimens are collected and sometimes used decoratively. Economic value depends almost entirely on actual gold content and purity.

Geological facts

Real gold remains yellow in shadow, is unusually heavy, and deforms rather than crumbling when pressed; pyrite (“fool’s gold”) is harder and brittle. A photograph cannot confirm gold—testing or assay is required.

Field identification & locations

Common in quartz veins and stream placers worldwide, including Australia, North America, South America, and Africa. Do not scratch or crush it; professional specific-gravity testing, streak testing, and fire assay are reliable.