mineral

Gold

Native Gold (Au)

Hardness: 2.5-3.0 (Mohs); Color: Golden yellow to brassy; Luster: Metallic; Crystal Structure: Isometric (cubic); Cleavage: None; Specific Gravity: 19.3 (very high).

Hardness: 2
Color: Golden yellow to brassy
Luster: Metallic

Identified March 15, 2026More mineral →

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Physical properties

Hardness: 2.5-3.0 (Mohs); Color: Golden yellow to brassy; Luster: Metallic; Crystal Structure: Isometric (cubic); Cleavage: None; Specific Gravity: 19.3 (very high).

Formation & geological history

Formed in hydrothermal quartz veins and volcanic deposits through magmatic processes. It is often found in 'placer' deposits where it has weathered out of primary rocks and settled in riverbeds due to its weight.

Uses & applications

Primary use in jewelry, investment (bullion), electronics, dentistry, and aerospace due to its high conductivity and resistance to corrosion.

Geological facts

Gold is so chemically stable it is found in its pure native state rather than needing to be extracted from an oxide or sulfide ore. It is also the most malleable and ductile of all metals.

Field identification & locations

Identify in the field by its high density, metallic luster, and sectility (you can dent it but it won't shatter like pyrite). Common locations include South Africa, China, Australia, and the western United States.