* gold-plated hallmark
The HGE hallmark: meaning, purity & value
Heavy gold electroplate. Per FTC, plating ≥100 millionths of an inch (~2.5 microns) thick. Still surface coating, not solid gold.
Published May 30, 2026
Quick facts
- Metal
- gold-plated
- Common regions
- United States
Stamps that mean the same thing
This purity may be struck into jewelry as any of: HGE / HEAVY GOLD ELECTROPLATE / HGP. The mark differs by country and era, but the metal content is identical.
What HGE tells you
Heavy gold electroplate. Per FTC, plating ≥100 millionths of an inch (~2.5 microns) thick. Still surface coating, not solid gold.
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 HGE or an equivalent such as HEAVY GOLD ELECTROPLATE.
- 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
- FTC Jewelry Guide 16 CFR Part 23.5
* Frequently asked
FAQ
- Q. Is HGE the same as HEAVY GOLD ELECTROPLATE?
- A. Yes. HGE, HEAVY GOLD ELECTROPLATE, HGP all denote the same material — gold-plated. Different markets and eras stamp it differently, but the purity is identical.
- Q. How do I confirm a HGE 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.
* Try it
Identify the jewelry in your hand, right now.
Just take a photo — AI reads the metal, gemstone, hallmark, era, and an estimated value range in seconds. First two scans free, no account required.
Download on the App Store* Related
Keep exploring
GEP hallmark
What the GEP hallmark means: gold-plated, how to read it on rings and necklaces, its scrap value formula, and how to tell it apart from look-alike stamps.
GF hallmark
What the GF hallmark means: gold-filled, how to read it on rings and necklaces, its scrap value formula, and how to tell it apart from look-alike stamps.