Is CROWN the same as Crown mark?

Yes. CROWN, Crown mark all denote the same material — gold. Different markets and eras stamp it differently, but the purity is identical.

How do I confirm a CROWN 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 hallmark

The CROWN hallmark: meaning, purity & value

British assay mark: crown symbol indicates gold (used 1798-1974). Specific karat shown alongside. Replaced by fineness numbers as standard mark in 1975.

Published May 30, 2026

Quick facts

Metal: Gold
Common regions: UK

Stamps that mean the same thing

This purity may be struck into jewelry as any of: CROWN / Crown mark. The mark differs by country and era, but the metal content is identical.

What CROWN tells you

British assay mark: crown symbol indicates gold (used 1798-1974). Specific karat shown alongside. Replaced by fineness numbers as standard mark in 1975.

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 CROWN or an equivalent such as Crown mark.
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

UK Hallmarking historical regulations

* Frequently asked

FAQ

Q. Is CROWN the same as Crown mark?: A. Yes. CROWN, Crown mark all denote the same material — gold. Different markets and eras stamp it differently, but the purity is identical.
Q. How do I confirm a CROWN 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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