Gold Nugget

Physical Properties

Hardness: 2.5-3.0 on Mohs scale; Color: Golden yellow to brassy; Luster: Metallic; Crystal system: Isometric/Cubic (usually found in irregular masses/nuggets); Cleavage: None; Specific Gravity: 19.3 (very heavy).

Formation & Geological History

Formed through hydrothermal processes in quartz veins or as secondary placer deposits in riverbeds where it is concentrated by its high density over millions of years.

Uses & Applications

Extremely valuable for use in jewelry, currency, electronics due to high conductivity, dentistry, and as a hedge against inflation for investors.

Geological Facts

Gold is one of the least reactive chemical elements and is solid under standard conditions. Most the world's gold is thought to have arrived during a meteor bombardment late in Earth's formation.

Field Identification & Locations

Identify by its high weight/density (heavier than it looks), malleability (it will dent rather than shatter like pyrite), and its persistent metallic luster that does not tarnish in water. Commonly found in panning sites in California, Alaska, and Australia.

Identified on: 5/7/2026

Mode: Standard