Gold Nugget Jewelry

Physical Properties

Hardness: 2.5-3.0 Mohs; Color: Metallic yellow; Luster: Metallic; Crystal Structure: Isometric/Cubic (often occurs as irregular nuggets); Cleavage: None; Specific Gravity: 19.3 (pure)

Formation & Geological History

Formed in hydrothermal quartz veins or concentrated in alluvial placer deposits through erosion. Geological age varies widely based on host rock deposits.

Uses & Applications

Primarily used in jewelry, as a store of value (investment bullion), and in electronics due to high conductivity and corrosion resistance.

Geological Facts

Most gold found in nature contains 10-20% silver. Gold is the most malleable and ductile of all known metals; an ounce can be beaten into a sheet covering 100 square feet.

Field Identification & Locations

Identify by its high density and malleability (it will bend but not shatter). Look for it in stream beds (placers) or inside quartz veins. Found globally, notably in South Africa, Australia, and the western United States.

Identified on: 5/2/2026

Mode: Standard