Is 14KGF the same as 1/20 14K GF?

Yes. 14KGF, 1/20 14K GF, 14K Gold Filled all denote the same material — gold-filled. Different markets and eras stamp it differently, but the purity is identical.

How do I confirm a 14KGF stamp is genuine?

Look at the mark under 10× magnification for crisp, even strikes, cross-check the weight-to-volume ratio against the expected density, scan it with the Jewelry Identifier app, and — when it matters — have an XRF test done by an assay office or gemological lab.

* Gold-Filled hallmark

The 14KGF hallmark: meaning, purity & value

14KGF is 14K gold-filled (mechanically bonded gold layer, often 1/20 by weight). More durable than plating but not solid karat gold for melt quotes.

Published May 30, 2026

Quick facts

Metal: Gold-Filled
Common regions: United States
Standard: ISO 9202

Stamps that mean the same thing

This purity may be struck into jewelry as any of: 14KGF / 1/20 14K GF / 14K Gold Filled. The mark differs by country and era, but the metal content is identical.

What 14KGF tells you

14KGF is 14K gold-filled (mechanically bonded gold layer, often 1/20 by weight). More durable than plating but not solid karat gold for melt quotes.

How to check it yourself

Examine the stamp under a 10× loupe — genuine marks are crisp and evenly struck, not doubled or smeared.
Confirm the mark reads 14KGF or an equivalent such as 1/20 14K GF.
Photograph it in the Jewelry Identifier app to read the metal, hallmark, and any gemstones from the image.
For a binding result, have an assay office or gemological lab run an XRF purity test.

Sources

ISO 9202
Trade hallmark references

* Frequently asked

FAQ

Q. Is 14KGF the same as 1/20 14K GF?: A. Yes. 14KGF, 1/20 14K GF, 14K Gold Filled all denote the same material — gold-filled. Different markets and eras stamp it differently, but the purity is identical.
Q. How do I confirm a 14KGF stamp is genuine?: A. Look at the mark under 10× magnification for crisp, even strikes, cross-check the weight-to-volume ratio against the expected density, scan it with the Jewelry Identifier app, and — when it matters — have an XRF test done by an assay office or gemological lab.

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