* Gold hallmark
The 800 hallmark: meaning, purity & value
80% gold fineness. Historical Austrian standard; rare. NOT to be confused with the 800 silver standard (continental European silver).
Published May 30, 2026
Quick facts
- Metal
- Gold
- Purity
- 80.0%
- Fineness
- 800/1000
- Common regions
- AT, DE-historic
- Standard
- ISO 9202
What 800 tells you
80% gold fineness. Historical Austrian standard; rare. NOT to be confused with the 800 silver standard (continental European silver).
How to value it
The melt value of a 800 piece is gold spot price × 0.800 × weight (g). A buyer typically deducts 5–15% for assay, refining, and margin, so the cash offer lands just under that figure. Stones and complex settings are usually excluded from the metal weight.
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 800.
- 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. How much is 800 worth?
- A. Its melt value is the gold spot price × 0.800 × the weight in grams. Buyers then deduct roughly 5–15% for refining and margin, so a quoted buy-back price sits a little below that theoretical figure.
- Q. How do I confirm a 800 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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