mineral

Gold Nugget

Native Gold (Au)

Hardness: 2.5–3.0 on the Mohs scale. Color: Metallic golden yellow. Luster: Metallic. Crystal Structure: Isometric (rarely found in distinct crystals). Cleavage: None. Specific Gravity: 15.5–19.3 (extremely heavy).

Hardness: 2
Color: Metallic golden yellow
Luster: Metallic

Identified March 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes where hot, mineral-rich fluids deposit gold in quartz veins (primary) or concentrated in riverbeds through erosion and alluvial activity (secondary/placer deposits). Current specimens can range in age from billions of years old to relatively recent.

Uses & applications

Primary uses include jewelry, currency, bullion for investment, and high-end industrial electronics due to its excellent conductivity and resistance to corrosion.

Geological facts

Gold is so malleable that a single ounce can be beaten into a sheet covering 100 square feet. Most ‘nuggets’ found in nature are actually between 75% and 95% pure gold, often alloyed with silver (forming electrum) or copper.

Field identification & locations

Identified in the field by its high density (it will not wash away in a pan), malleability (it dents rather than shatters when struck), and lack of tarnish. Common locations include the Klondike, California, and Western Australia. Collectors look for high purity and unique shapes.