mineral

Native gold nuggets

Gold (Au), usually with minor silver and copper

AI-generated identification · may be incorrect

Metallic yellow color and luster, irregular nugget forms, very malleable, non-cleaving, Mohs hardness 2.5–3, and exceptional density (specific gravity about 19.3). The image appears to show coarse native gold rather than a rock matrix.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Gold forms in hydrothermal quartz veins and is released by weathering, then concentrated as placer gold in stream gravels; most natural specimens formed over millions to billions of years. Exact locality and age cannot be determined from the image.

Uses & applications

Used primarily in jewelry, electronics, dentistry, investment, and scientific equipment; attractive natural nuggets have additional collector value.

Geological facts

Gold is one of the few elements naturally occurring as visible metal and does not readily tarnish. Its high density makes it noticeably heavy for its size, while its malleability distinguishes it from similarly colored pyrite.

Field identification & locations

Identify by softness, heft, yellow streak, and deformation when pressed—not by brittleness; pyrite is harder and brittle. Common sources include Australia, Alaska, California, Canada, South Africa, and Brazil.