Hallmark Guide

Understanding 14K Gold Purity

This page explains what 14K gold means in measurable terms and why it is widely used for daily-wear fine jewellery. It is intentionally focused on 14K only — without repeating hallmark-reading or full purity tables.

58.5% pure gold Fineness: 585 Built for longevity

Fast definition

14K means 14 parts gold out of 24. In fineness (parts per thousand), this corresponds to 585.

How this ties to UK hallmarking

UK hallmarking uses fineness marks to express metal purity. For official background, use London Assay Office resources.

London Assay Office Certification How independent verification fits into our workflow

What “14K” means (measurable purity)

Karat is a fraction of 24. 14K means the alloy contains 14/24 gold. In percentage terms, that equals 58.5% pure gold.

In hallmarking fineness terms, 14K is expressed as 585 (585 parts of gold per 1,000).

What “585” is used for

“585” is a compact purity expression used in hallmarking systems. It standardises purity communication across products and markets, allowing customers to verify that the piece aligns with a defined gold content standard.

Full purity tables across karats are intentionally kept on the main Hallmark Guide page to avoid duplication.

Why 14K for daily wear

14K is widely used for rings and everyday jewellery because it balances gold purity with practical structure. Higher-purity alloys can be softer; lower-purity alloys can change the look and long-term feel.

Durability

The alloy blend helps resist everyday knocks and abrasion better than higher-karat gold in many use cases.

Shape stability

For rings, structural stability matters. 14K supports long-term wear with reduced deformation risk.

Finish retention

With correct care, 14K can maintain its finish well and is suitable for frequent use.

Consistent standard

Fineness marking (585) gives a consistent, verifiable purity reference across eligible pieces.

Care & longevity (simple rules)

  • Remove for impact: take rings off for heavy lifting, gym work, and contact sports.
  • Avoid harsh chemicals: chlorine, strong cleaners, and solvents can affect finish and settings.
  • Store separately: prevent scratches by separating pieces in a pouch or lined box.
  • Clean gently: lukewarm water, mild soap, soft brush; dry with a soft cloth.
  • Periodic checks: for stone-set pieces, check settings regularly to avoid loosening over time.

Where this sits in the Hallmark menu

FAQs

Is 14K gold real gold?
Yes. 14K gold contains 58.5% pure gold and is a widely used standard for fine jewellery designed for frequent wear.
Why does 14K show “585”?
585 is the fineness expression for 14K: 585 parts of gold per 1,000 parts total metal.
Where do I find the full karat purity table?
It is intentionally located on the main Hallmark Guide page to avoid duplication across subpages.