What Does 925 Mean on Jewelry? A Guide to Common Gold & Silver Jewelry Hallmarks

If you’ve ever looked closely at the inside of a ring or the clasp of a necklace, you’ve probably noticed a tiny stamp: 925, 585, 750, 14K, GF, GP.

Those little marks can tell you a lot about a piece of jewelry, but they’re not always obvious if you don’t know what you’re looking at.

The most common one people ask about is 925, so let’s start there.

What does 925 mean on jewelry?

A 925 stamp means the piece is sterling silver.

Sterling silver is 92.5% pure silver, with the remaining 7.5% made up of other metals to make it stronger. Pure silver is pretty soft, so typically, like gold, it's mixed with other metals before it’s used for rings, bracelets, chains, and other everyday jewelry. This makes the piece sturdier and better suited for every day wear. 

You might also see sterling silver marked as: 925, .925, Sterling, Ster, or Sterling Silver

What does 925 Italy mean?

If a piece says 925 Italy, it generally means it’s sterling silver made in Italy.

This is a pretty common mark on vintage and estate jewelry, especially chains and bracelets.

What do other silver numbers mean?

Not all silver jewelry is marked 925.

You may also see:

• 800 — 80% silver

• 830 — 83% silver

• 900 — 90% silver

• 925 — 92.5% silver

• 999 — 99.9% silver

Older and European pieces are especially likely to have marks other than 925.

So if you see 800 or 900 on a piece, that doesn’t automatically mean it’s fake or low quality. It may simply come from a different time or place where another silver standard was common.

What do 375, 417, 585 and 750 mean?

Those numbers are usually gold purity marks.

They work the same basic way as 925: the number tells you how much pure gold is in the metal out of 1,000 parts. Here are some of the most common:

• 375 = 9K gold (37.5% gold)

• 417 = 10K gold (41.7% gold)

• 585 = 14K gold (58.5% gold)

• 750 = 18K gold (75% gold)

• 916 = 22K gold (91.6% gold)

• 999 = 24K gold (99.9% gold)

In the U.S., you’re more likely to see the karat stamped directly — 10K, 14K, 18K, while European jewelry often still use the three-digit number instead.

What does GF mean?

GF means gold filled.

Gold-filled jewelry has a layer of real gold bonded over another metal. It contains more gold than standard gold-plated jewelry, but it's still not solid gold. You might see something like:

1/20 14K GF

That means the piece has a 14K gold layer that makes up 1/20 of the total weight of the item. Gold-filled jewelry tends to hold up better than regular gold plate and is often found in vintage pieces.

What does GP mean?

GP means gold plated.

Gold-plated jewelry has a thin layer of gold over a base metal.

If something is stamped 14K GP, that does not mean the entire piece is 14K gold. It means the plating is 14K gold. This distinction matters quite a bit when you’re trying to figure out the value of a piece.

What does RGP mean?

RGP stands for rolled gold plate.

It’s another type of jewelry where a layer of gold has been bonded to a base metal. You’ll sometimes see marks like:

1/40 12K RGP

Rolled gold plate was used quite a bit in older jewelry, so it comes up often when identifying vintage pieces.

What does HGE mean?

HGE stands for heavy gold electroplate.

This means the piece has a gold coating over another metal. If you see something like 14K HGE, it is not solid 14K gold.

You may also see:

• GP — gold plated

• GEP — gold electroplate

• HGE — heavy gold electroplate

• RGP — rolled gold plate

These markings are easy to miss, but they completely change what the piece is made of.

What about vermeil?

Vermeil is sterling silver with a layer of gold over it.

So if you have a gold-colored piece that is stamped 925, there’s a chance it could be vermeil. That ends up surprising a lot of people because they assume 925 always means the jewelry should look silver.

The metal underneath is sterling silver, but the outside has been coated in gold.

What does 950 mean?

A 950 stamp is often found on platinum jewelry.

It usually means the piece is 95% platinum.

You do want to look at the entire stamp, though, because numbers by themselves can sometimes be misleading depending on the country, age, and type of jewelry.

What about initials or symbols next to the number?

Not every mark is about metal purity.

You might see a stamp like:

14K ABC

The 14K tells you the gold content. The letters may identify the maker or manufacturer. Other stamps can indicate:

• A jewelry maker

• A designer

• A country of origin

• A date

• An assay office

• A trademark

Some vintage pieces have several marks together, which can actually help narrow down when and where they were made.

Where should you look for hallmarks?

They’re usually hidden somewhere discreet.

For rings, check the inside of the band. For necklaces and bracelets, check the clasp or the small tag next to it. For earrings, check the post, back, or closure. For pendants, look on the back or on the bail.

Some marks are tiny, especially on older jewelry. A loupe or even the macro setting on your phone camera can make them much easier to read.

A quick jewelry hallmark guide

Can you trust the stamp?

Usually, yes, but not always.

A hallmark is one of the first things we look at when trying to identify a piece, but it’s just one clue.

Stamps can wear down. Jewelry can be repaired or resized. Older pieces may use markings that aren’t common anymore. And sometimes jewelry is simply isn't stamped because it has been melted down or repurposed.

If you’re trying to figure out whether a piece is valuable or made from real gold or silver, the best next step is usually to have the metal tested. There are some tests you can do yourself, you can read about those here: How to tell if you have solid gold

Once you know the basics, those tiny numbers and letters become a lot more useful. They can tell you what a piece is made of, and sometimes give you clues about where and when it was made.