mineral

Native Gold (in the form of jewelry)

Gold (Au)

Hardness: 2.5–3.0 Mohs; Color: Golden-yellow; Luster: Metallic; Crystal Structure: Isometric (Face-centered cubic); Cleavage: None (sectile and malleable); Specific Gravity: 19.3 (very high).

Hardness: 2
Color: Golden-yellow
Luster: Metallic

Identified April 21, 2026More mineral →

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Physical properties

Hardness: 2.5–3.0 Mohs; Color: Golden-yellow; Luster: Metallic; Crystal Structure: Isometric (Face-centered cubic); Cleavage: None (sectile and malleable); Specific Gravity: 19.3 (very high).

Formation & geological history

Formed through hydrothermal processes, often in quartz veins within metamorphic or igneous rocks. Many deposits are volcanic-associated. Also found in secondary alluvial/placer deposits after erosion.

Uses & applications

Used in jewelry, electronics, currency, medicine (dentistry), and aerospace due to its high conductivity and resistance to corrosion.

Geological facts

Gold is so malleable that a single ounce can be stretched into a wire 50 miles long. Most of the gold found today was delivered to Earth's surface via meteorite impacts billions of years ago.

Field identification & locations

Identify in the field by its distinct high density, softness (it can be scratched by a copper coin), and lack of tarnish. Commonly found in quartz veins and riverbeds in areas like California, Alaska, Australia, and South Africa.