999

What is a Fine Silver (999)?

Fine Silver (999) is a silver-purity grade used to compare millesimal-fineness silver content in jewelry and silverware.

Fine Silver (999) is a silver-purity grade used to compare millesimal-fineness silver content in jewelry and silverware.

Fine silver is 99.9% pure and stamped 999. It is mainly used for bullion bars and coins because it is too soft for most jewelry.

Measurement system: Jewelry purity grading based on millesimal (per-1000) fineness. SI equivalent: Reference purity factor used in the converter: 0.999.

Fine Silver (999) facts

Unit name
Fine Silver (999)
Symbol
999
Category
Silver Purity
Measurement system
Jewelry purity grading based on millesimal (per-1000) fineness
SI equivalent
Reference purity factor used in the converter: 0.999
Common uses
Jewelry, silverware, valuation and silver-purity checks

Definition of the fine silver (999)

Fine Silver (999) is a silver-purity grade used to compare millesimal-fineness silver content in jewelry and silverware.

Measurement system and SI relationship

Jewelry purity grading based on millesimal (per-1000) fineness

SI equivalent: Reference purity factor used in the converter: 0.999

History of the fine silver (999)

Fine silver is 99.9% pure and stamped 999. It is mainly used for bullion bars and coins because it is too soft for most jewelry.

Where is the fine silver (999) used?

Jewelry, silverware, valuation and silver-purity checks

Fine Silver (999) conversion tools

Sources

  1. BIPM: The International System of Units (SI Brochure)
  2. NIST: Guide for the Use of the International System of Units

Other languages

View the Turkish versionOpen the German version