Understanding Jewelry Hallmarks & Metal Stamps
Those tiny stamps inside your jewelry tell an important story.
Look closely inside a ring or on an earring post and you'll often spot tiny stamps. These hallmarks reveal what your jewelry is made of — here's how to read them.
What hallmarks tell you
A metal stamp identifies the type and purity of the metal. Common marks include 925 (sterling silver), 10K / 14K / 18K (gold purity), and PLAT or 950 (platinum).
Common stamps decoded
| Stamp | Means |
|---|---|
| 925 | Sterling silver (92.5% pure) |
| 14K / 18K | Gold purity in karats |
| PLAT / 950 | Platinum |
Why hallmarks matter
They're your assurance of what you're buying. A clear stamp signals quality and honesty — one of the things to check when judging a piece. See How to Spot Quality in Fine Jewelry.
Learn the individual metals in 925 Sterling Silver and Gold Karats Explained.
FAQs
What does the stamp inside my ring mean?
It identifies the metal and its purity — for example 925 for sterling silver or 14K for gold.
Should all jewelry have a hallmark?
Quality precious-metal jewelry is typically stamped; a clear mark is a good sign of an honest, well-made piece.
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