mineral

Gold Nugget

Native Gold (Au)

Hardness: 2.5-3; Color: Golden yellow to brassy; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 19.3

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

Identified May 7, 2026More mineral →

Explore Gold Nugget in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 2.5-3; Color: Golden yellow to brassy; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 19.3

Formation & geological history

Formed through hydrothermal processes in quartz veins or as secondary deposits in riverbeds (placer deposits) via erosion. They are found in geological contexts ranging from Precambrian to Cenozoic.

Uses & applications

Mainly used in jewelry, investment (bullion), electronics due to high conductivity, and dentistry. Highly valued by collectors for natural form.

Geological facts

Gold is incredibly ductile; a single ounce can be stretched into a wire 50 miles long. Unlike many metals, it does not tarnish or oxidize.

Field identification & locations

Identify by its high density (heavy weight for size), malleability (it dents rather than shatters), and persistent metallic luster under shade. Found globally in auriferous districts such as California, Alaska, and Australia.