mineral

Gold Nugget

Native Gold (Au)

Hardness: 2.5-3.0 Mohs; Color: Metallic yellow to orange-gold; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 19.3 (very heavy)

Hardness: 2
Color: Metallic yellow to orange-gold
Luster: Metallic

Identified April 7, 2026More mineral →

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Physical properties

Hardness: 2.5-3.0 Mohs; Color: Metallic yellow to orange-gold; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 19.3 (very heavy)

Formation & geological history

Formed in hydrothermal quartz veins or as secondary deposits through the weathering of those veins. Many nuggets are found in alluvial (placer) deposits in rivers and streams after being eroded from their source rock.

Uses & applications

Used primarily in jewelry, currency, electronics due to high conductivity, and as a specialized investment and collector item.

Geological facts

Gold is one of the least reactive chemical elements and does not tarnish or oxidize. A nugget is a naturally occurring piece of native gold that has Been concentrated by the action of water.

Field identification & locations

Identify by its high density (weight relative to size) and malleability (it can be flattened with a hammer without shattering). Frequently found in California (USA), Australia, and Alaska in riverbeds.