Mineral field guide

How to identify silver

Native silver is a dense, soft, malleable metal with a bright silver-white fresh surface that commonly tarnishes gray, brown, or black; it occurs in wires, plates, grains, and irregular masses.

mineralNative element · Ag

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Tarnished gray native silver in a quartz matrix from near Cobalt, Ontario
Native silver in quartzPhoto: Darla Sondrol · CC0 1.0 · Wikimedia Commons
Classification

What is silver?

Native silver is elemental Ag and may contain gold, copper, mercury, or other metals. Natural silver also occurs in many sulfide, sulfosalt, halide, and telluride minerals, so a silver-bearing specimen is not necessarily native silver.

Appearance

What does silver look like?

Fresh native silver has a bright metallic white color, but exposure can produce gray to black tarnish that conceals it. Wires, curls, branching aggregates, plates, and compact masses are characteristic forms.

Thin coatings, metallic lead, galena, and manufactured metal can look similar. Visual appearance alone cannot establish elemental silver, fineness, or economic value.

Field tests

Identification tests

Begin with observation and use the least destructive test first. Results can change with weathering, mixtures, coatings, and grain size. Review the step-by-step field-test methods before altering an unfamiliar specimen.

Hardness

2.5 to 3

Scratched by copper or steel; much softer than pyrite.

Streak

Silver-white

Differs from galena’s gray-black streak, although tarnish can interfere.

Tenacity

Malleable, ductile, and sectile

A loose expendable piece deforms instead of breaking like galena.

Density

Very high; specific gravity about 10.5

Heft supports identification but does not distinguish every heavy metal.

Comparison

Common lookalikes

Galena

Brittle, gray-streaked, and breaks along cubic cleavage instead of bending.

Native lead

Darker, softer, and commonly associated with human-made material; context and analysis may be required.

Manufactured metal

Solder, foil, wire, and fragments often have regular shapes or occur near human activity.

Geologic origin

How does it form?

Native silver forms in hydrothermal veins, enriched zones of silver-bearing deposits, and some volcanic or sediment-hosted systems where chemical conditions allow elemental metal to precipitate.

It may occur with native copper and gold, calcite, quartz, galena, acanthite, cobalt-nickel minerals, and other ore minerals.

Where it occurs

Geologic setting and occurrence

Native silver is uncommon compared with silver hosted in other minerals. Even a productive silver deposit may contain little visible native metal.

Dark tarnish and small grain size make field recognition difficult. Laboratory analysis is appropriate before appraisal, processing, or claims about composition.

Human use

Uses and significance

Silver is used in electronics, solar cells, brazing alloys, mirrors, antimicrobial applications, photography, jewelry, tableware, and investment products.

Safety and limits

Field notes

  • Do not use acids or improvised chemical tests on suspected silver.
  • Lead- and arsenic-bearing minerals commonly occur in silver deposits; avoid dust and wash hands.
  • Field appearance cannot establish fineness, authenticity, provenance, or value.

This guide supports preliminary field identification, not a laboratory determination, appraisal, hazard assessment, or statement of ownership or collecting permission. Verify land status and local rules before handling or collecting material.

Source basis

Authoritative sources

LithoMap wrote this guide in original language using the scientific concepts and physical-property standards supported by these sources.

Editorial review: September 17, 2026.