1. Jewelry Identifier
  2. Hallmarks
  3. GR

* gold-rolled hallmark

The GR hallmark: meaning, purity & value

European equivalent of rolled gold plate / gold filled. The French 'plaqué or' designation has specific minimum micron thickness requirements (varying by era).

Published May 30, 2026

Quick facts

Metal
gold-rolled
Common regions
France, international

Stamps that mean the same thing

This purity may be struck into jewelry as any of: GR / GOLD ROLLED / PLAQUÉ OR. The mark differs by country and era, but the metal content is identical.

What GR tells you

European equivalent of rolled gold plate / gold filled. The French 'plaqué or' designation has specific minimum micron thickness requirements (varying by era).

How to check it yourself

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

* Frequently asked

FAQ

Q. Is GR the same as GOLD ROLLED?
A. Yes. GR, GOLD ROLLED, PLAQUÉ OR all denote the same material — gold-rolled. Different markets and eras stamp it differently, but the purity is identical.
Q. How do I confirm a GR 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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