mineral

Raw gold nugget

Native gold (Au), possibly with minor quartz or silver

AI-generated identification · may be incorrect

Small irregular yellow metallic grain with bright luster and apparent malleable form; native gold has Mohs hardness 2.5–3, cubic crystal structure, no cleavage, and specific gravity about 19.3. The image alone cannot confirm purity or distinguish it from pyrite or gold-colored mica.

Identified September 22, 2026More mineral →

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Physical properties

Formation & geological history

Typically forms in hydrothermal quartz veins and is later liberated and concentrated in stream placers by weathering and erosion, commonly from relatively young surface deposits derived from much older rocks.

Uses & applications

Used primarily in jewelry, electronics, dentistry, and investment; natural nuggets are also collected as specimens. Value depends strongly on verified gold weight and fineness.

Geological facts

Gold is exceptionally dense, electrically conductive, corrosion-resistant, and ductile. A streak test, density measurement, and professional assay are more reliable than color alone.

Field identification & locations

Common in placer deposits in Australia, Alaska, California, Canada, and parts of South America. Gold bends or dents rather than crumbling; it does not scratch easily with steel, while pyrite is brittle and commonly forms angular crystals.