In short: Polish silver hallmarks are official marks that a state assay office strikes on a piece after verifying its fineness, for example 925. They are not the same as a maker’s mark, which the manufacturer applies so you know who is responsible for the piece. Small silver items weighing under 5 g may legally carry no official mark at all. What really tells you a piece is Polish is the full picture: a Polish hallmark, the maker’s mark of a Polish manufacturer and an accurate description from the seller.
Look inside the band of a signet ring or next to a bracelet clasp and you may spot several tiny marks. Each one is applied by someone different, and each tells you something different. Below we explain what a Polish hallmark is under the law, who applies it, how it differs from a maker’s mark and from a number stamped by the manufacturer, when a piece can legally have no official mark at all, and how to use all of this to identify Polish silver jewelry. The fineness numbers themselves — what each one means and which to choose for everyday wear — are covered in our separate guide to silver fineness from 999 to 800.
The legal basis is Poland’s Hallmarking Act of April 3, 1993 (Prawo probiercze), which has been amended many times since. It sets the rules for trading platinum, palladium, gold and silver articles in Poland, and it defines a hallmark as “a legally protected official mark confirming the precious metal content of an article.”
The key word here is “official.” This mark is not struck by the manufacturer or the store but by a state institution — and that is what sets it apart from everything else you will see on a ring or chain. It confirms the metal content, but it says nothing about the quality of the workmanship, the stone or who designed the piece.
The second important definition concerns fineness. Under the Act, fineness is the ratio of the mass of pure metal to the mass of the alloy, expressed in parts per thousand. Put simply, it tells you how much pure metal the alloy contains: 925 means 925 parts of pure silver per 1,000. Gold, platinum and palladium each have their own separate sets of fineness standards.
Marks on Silver
What the Marks on Jewelry Mean
Oversight lies with the President of Poland’s Central Office of Measures (GUM) as the central authority and with the directors of the regional assay offices. In practice, a piece goes to an assay office before it is put on sale. There, the precious metal content of the alloy is tested, and if it matches the declared fineness, the office strikes the hallmark. That way, the fineness information does not rest on the manufacturer’s word alone.
The design of the hallmarks is set by the authorities, but it has changed over the years, so pieces from different periods carry different marks. They may feature small images, symbols and letters. Don’t guess what they mean from random photos online — the current designs are published by GUM on its website, and you can ask about an older mark directly at an assay office.
On and around a piece of jewelry you will find several kinds of information. They are easy to confuse, and each carries a different weight.
The Act describes the maker’s mark as “an individual mark that identifies the manufacturer” — or, for pieces made abroad, the business that places them on the Polish market. It is struck by the manufacturer or importer, not by the assay office, and it often takes the form of letters, such as initials. Maker’s marks are entered in an official register, and newly made pieces produced in Poland and offered for sale are stamped with them.
A “925” stamped on a clasp, sometimes alongside “Ag” or “sterling,” is the manufacturer’s declaration, not an official mark. On lightweight pieces it may be the only indication of fineness. The number alone guarantees nothing, but together with a maker’s mark and an accurate description, it is a useful clue.
When you shop online, you can’t examine a piece under a loupe, which is why the store’s description matters so much. It should clearly state the metal and its fineness, the finish (oxidized, rhodium-plated, gold-plated) and the type of stone — natural, synthetic or reconstructed. Still, a description is no substitute for the marks on the piece itself.
| Mark | Who applies it | What it tells you | What to watch for |
|---|---|---|---|
| Hallmark (official mark) | Assay offices, after testing the piece | That the piece meets the declared fineness | Confirms the metal content, not where the piece was made |
| Maker’s mark | The manufacturer or, for imports, the business that puts the piece on sale | Who is responsible for the piece | On imports it identifies the importer, not the foreign workshop |
| Fineness number alone | The manufacturer | The declared metal content | It is not an official mark |
| Foreign or Convention hallmark | Foreign assay offices; Polish offices also apply the Convention mark | Fineness tested under that system | Check the designs against official sources |
| Store description | The seller | Metal, fineness, finish and type of stone | No substitute for the marks on the piece |
Not every piece has to be tested at an assay office. The exemptions from mandatory testing and hallmarking include silver articles weighing less than 5 g — strictly speaking, the weight of the parts made of silver. For gold, the threshold is lower: 1 g. Delicate earrings, a light pendant or a thin ring may therefore carry no official mark, and that is no warning sign.
Lighter pieces are not outside the rules, though. The business placing them on the market must make sure they meet one of the legal fineness standards, pass the fineness information on to the next business in the supply chain and — with certain exceptions — stamp them with a maker’s mark. That is why, on small pieces, you should look first for the fineness number and the maker’s mark.
Heavier pieces — signet rings, chunky rings, bracelets or chains — as a rule must be hallmarked in Poland before going on sale, or carry a hallmark from another country that Poland recognizes. If a heavy signet ring has no marks at all, neither official nor maker’s, ask the seller where it comes from and whether it was tested.
Jewelry sold in Poland may also carry marks from other countries, and that is not necessarily a bad sign. The law allows the sale of pieces bearing hallmarks recognized under international agreements that bind Poland, as well as — on terms set out in the Act — pieces lawfully sold in other EU member states (and in EFTA countries and Turkey) on the basis of those countries’ marks.
One such agreement is the Convention on the Control and Marking of Articles of Precious Metals, signed in Vienna in 1972, which Poland joined in 2005. Member states use and recognize a common control mark, and marks applied under the Convention are known as Convention hallmarks. Polish assay offices apply them as well.
You can look up what individual countries’ marks and the Convention’s common mark look like in official sources. The practical takeaway: a foreign official mark on a ring bought in Poland is not a sign of a fake — it simply means the piece was tested abroad.
First, an important caveat: a Polish hallmark confirms that a Polish assay office tested the piece, not that it was made in Poland — imported pieces are tested there too. The maker’s mark says more about origin, but for imports it, too, points to the business that brought the piece to market rather than the foreign workshop. That is why the marks are best read together:
On older pieces, such as vintage jewelry from the Polish People’s Republic (PRL) era, you will see different mark designs than on new ones — that is normal. If you love that kind of jewelry, take a look at our article on vintage PRL-era Polish jewelry. If you are not sure whether a piece is real silver at all, our guide on how to tell sterling silver from silver-plated jewelry will help, and when you are choosing where to buy, see 8 things to check before buying from an online silver jewelry store.
Polcarat Design is a family jewelry workshop in Rumia, Poland, in business since 1984. We make 925 sterling silver jewelry that is cast and then hand-finished: in the workshop we set the stones, solder, join links, grind, polish and oxidize by hand. Our silver alloy is nickel-free.
Our pieces are checked by the Polish Assay Office, and those weighing over 5 g are hallmarked. Our maker’s mark is the letters “DJ” — the initials of the workshop’s owner, Dorota Jażdżewska — and it is how you can recognize jewelry from our workshop. We state the type of stone — natural, reconstructed or synthetic — in every product description.
The official mark is easiest to find on our heavier designs: signet rings, chunky rings and bracelets set with labradorite, turquoise, reconstructed malachite, lapis lazuli, mother-of-pearl or amber. If you are choosing a signet ring, also read which finger to wear a signet ring on and how to find the right size.
A hallmark is applied by the assay office after testing the piece, and it confirms the fineness. A maker’s mark is struck by the manufacturer or importer and shows who is responsible for the piece.
Not necessarily. Lightweight pieces under 5 g don’t need an official mark. As a rule, though, they should carry a maker’s mark, and the seller should state the fineness.
No. Each metal has its own designs, and gold fineness standards (such as 585 or 750) are entirely different. You can check the current designs in GUM’s published materials.
It is the manufacturer’s declaration, not an official mark. On lightweight pieces it may be the only fineness information, so it is worth confirming in the product description or with the seller.
An assay office can determine it precisely. At-home tests give you a hint at best.
Yes, if it weighs over 5 g — pieces like that from our workshop are hallmarked. Our maker’s mark is “DJ,” the initials of the workshop’s owner, Dorota Jażdżewska.
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