mineral

Silver (Sterling Silver)

Argentum (Ag) mixed with Copper (Cu); Formula: Ag+Cu

Hardness: 2.5–3 (Mohs scale); Color: Metallic white; Luster: Brilliant metallic; Crystal Structure: Isometric (Face-centered cubic); Cleavage: None; Specific Gravity: 10.4–10.5

Hardness: 2
Color: Metallic white
Luster: Brilliant metallic

Identified March 20, 2026More mineral →

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Physical properties

Hardness: 2.5–3 (Mohs scale); Color: Metallic white; Luster: Brilliant metallic; Crystal Structure: Isometric (Face-centered cubic); Cleavage: None; Specific Gravity: 10.4–10.5

Formation & geological history

Formed in hydrothermal veins and oxidation zones of ore deposits. Native silver occurs in various geological ages, often associated with volcanic activity or metamorphic processes. These earrings are manufactured by alloying pure silver with copper for structural integrity.

Uses & applications

Primary use in jewelry, silverware, and decorative arts. Industrially, it is used in electronics, solar panels, photography, and medical equipment due to high conductivity and antimicrobial properties.

Geological facts

Silver has the highest electrical and thermal conductivity of any metal. Sterling silver is an alloy containing 92.5% silver and 7.5% other metals (usually copper) to increase hardness and durability.

Field identification & locations

Identified by its high metallic luster, malleability, and characteristic tarnish (silver sulfide). In the field, look for '925' or 'Sterling' hallmarks on the jewelry posts. Naturally found in countries like Mexico, Peru, and China.

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