mineral

Gold Nugget

Gold (Au)

Mohs hardness of 2.5 to 3; golden yellow color with metallic luster; crystal structure is isometric (face-centered cubic); no cleavage; very high specific gravity (approx. 19.3).

Identified July 28, 2026More mineral →

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Physical properties

Mohs hardness of 2.5 to 3; golden yellow color with metallic luster; crystal structure is isometric (face-centered cubic); no cleavage; very high specific gravity (approx. 19.3).

Formation & geological history

Formed through hydrothermal processes where gold-bearing fluids precipitate out in quartz veins or through weathering and alluvial concentration in placer deposits.

Uses & applications

Used in jewelry, investment bullion, electronics, and dentistry.

Geological facts

Native gold is remarkably malleable and ductile; a single gram can be beaten into a sheet of one square meter.

Field identification & locations

Identified by its distinctive bright yellow color, high density, softness, and resistance to tarnish; commonly found in riverbeds and quartz-rich veins worldwide.