* gold-alloy-modifier hallmark
The WG hallmark: meaning, purity & value
White gold modifier. Gold alloyed with white metals (palladium, nickel, silver, zinc) to produce white appearance. Almost always rhodium-plated for whiter finish; plating wears in 1-3 years. Combined with karat e.g. K18WG.
Published May 30, 2026
Quick facts
- Metal
- gold-alloy-modifier
- Common regions
- international
Stamps that mean the same thing
This purity may be struck into jewelry as any of: WG / WHITE GOLD / Or Gris. The mark differs by country and era, but the metal content is identical.
What WG tells you
White gold modifier. Gold alloyed with white metals (palladium, nickel, silver, zinc) to produce white appearance. Almost always rhodium-plated for whiter finish; plating wears in 1-3 years. Combined with karat e.g. K18WG.
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 WG or an equivalent such as WHITE GOLD.
- 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.
* Frequently asked
FAQ
- Q. Is WG the same as WHITE GOLD?
- A. Yes. WG, WHITE GOLD, Or Gris all denote the same material — gold-alloy-modifier. Different markets and eras stamp it differently, but the purity is identical.
- Q. How do I confirm a WG 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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