mineral

Native gold specimen (probable gold-bearing quartz)

Native gold, Au, with likely quartz (SiO₂) and possibly iron-oxide/sulfide matrix

AI-generated identification · may be incorrect

Metallic yellow-gold luster, irregular to dendritic masses, and no obvious crystal faces; gold is extremely malleable and has Mohs hardness 2.5–3, while quartz is 7. Specific gravity is about 19.3 for pure gold, making it unusually heavy.

Identified August 19, 2026More mineral →

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At a glance

Common name: Native gold specimen (probable gold-bearing quartz)
Scientific name: Native gold, Au, with likely quartz (SiO₂) and possibly iron-oxide/sulfide matrix
Category: mineral
Identified: August 19, 2026
Method: Standard

AI Estimated Value

Approximately $100–$1,000+ if it contains measurable natural gold; potentially much more for a documented, attractive specimen. Assay and weighing are essential.

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 by hydrothermal fluids depositing gold in quartz veins or fractures, commonly during orogenic mountain-building events; the specimen’s exact age and locality cannot be determined from the image.

Uses & applications

Used chiefly for jewelry, bullion, electronics, and scientific applications; attractive natural nuggets and matrix specimens are collected. Value depends strongly on verified gold weight, purity, locality, and aesthetics.

Geological facts

Gold’s distinctive color remains yellow in most lighting, unlike pyrite’s brassy, brittle appearance. A streak, density, softness, and professional assay are more reliable than appearance alone.

Field identification & locations

Common sources include Australia, California, Alaska, Nevada, Canada, and South Africa. Test cautiously: gold leaves a yellow streak and deforms under pressure; pyrite powders dark green-black and fractures. Avoid destructive tests without expert supervision.