Many of us have seen the small numbers or letters engraved inside a ring band or near the clasp of a piece of jewelry that we own. But how many of us understand what information those stamps are actually giving us?
In this post, we’ll walk through the different stamps, what they mean, and what you need to know about stamping laws to ensure you’re getting the most accurate information about your jewelry. Let’s start with the basics:
- 10K, 14K, 18K, 24K, etc – if this is the ONLY stamp on the piece, it is telling you first and foremost that the piece is solid gold and secondly, the karat fineness of the gold. For example, let’s look at 14K. 14 out of 24 particles in the metal are pure gold. The others can be a mix of elements including palladium, copper, etc. These additional elements are what determine the specific color of the gold (we’ll talk about this in an upcoming post).
750 stamp on jewelry means 18k Gold - 417, 585, or 750 – this is just another way of telling us the gold content. However, instead of referring to how many parts out of 24 are pure gold, this number is now out of 1,000. So for 10K gold jewelry, 417 out of 1,000 parts are pure gold. For 14K gold jewelry, 585 parts out of 1,000 are pure gold. So when you see 750 that means 18K gold jewelry because the metal is made of 750 parts per 1,000 of pure gold.
- 900, 900PT, PT900, 950, 950PT, PT950 – all of these stamps designate that the piece is made of one of the two most common platinum alloys. 900, 900PT, or PT 900 all signify that the metal used is 900 parts per 1,000 pure platinum, while 950, 950PT, and PT950 denote 950 parts per 1,000 are pure platinum.
- 925 – a piece with this stamp is made of sterling silver. Legally, to be considered sterling silver a piece has to consist of 92.5% pure silver, with only 7.5% other elements mixed in.
- GP – pieces with this stamp have been plated with gold, but have another metal underneath. It almost always has the karat fineness of the plating listed, i.e. 18K GP.
- HGE – this is the abbreviation for high grade electroplate, which is another way of denoting that the jewelry you are looking at is not solid gold. These pieces also generally display the karat fineness of the gold.
- GF – this stands for gold-filled, which is a term that means a thin layer of gold was bonded to a base metal to make this piece.
So now that we have the basic stamp meanings down, let’s go through some of the most frequently asked questions that we hear from customers:
There’s another symbol next to the metal content stamp that isn’t on your list. What does that mean?
Most likely, the stamp you are seeing here is the manufacturer’s trademark or the trademark of the retailer selling the piece. This is legally required if the item is stamped and serves as a guarantee of sorts that the manufacturer/retailer vouches for the accuracy of the stamp on the metal.
My jewelry piece isn’t stamped at all. Does this mean it’s not made of precious metal?
Not necessarily. The legal guidelines on stamping don’t require all pieces made of precious metal to be stamped. However, they do require the manufacturer or retailer to disclose any precious metal content. This could be via discussion in the store upon purchase, on a tag attached to the piece, or on the receipt for the product itself.
The clasp/closure/earring backs on my piece are stamped, but the rest of the item is not. Does that mean the whole thing is made of precious metal?
Again, not necessarily. Sometimes the clasp of a piece is made of a different metal than the chain, so definitely confirm with the store clerk or jeweler that the entire item is made of the metal from the stamping. Likewise, earring backs may have been accidentally swapped and may not be made of the same metal as the rest of the earrings, especially the posts, so double checking is always best.
My piece has a name/date engraved on it. Is this the designer or year that the piece was made?
For well-known brands and designers, this can be the case, but it isn’t necessarily a correct assumption. For example, Tiffany & Co. has several Paloma Picasso designs that would be engraved as such and may include the date. However, it could also be that the piece is vintage or estate and was engraved with the previous owner’s name, anniversary, etc.
What other questions do you have about jewelry stamp meanings?
Community Discussion
Questions, experiences, and expert answers from the QJR community.
I have a ring stamped 10k with a jagged S. What does the S mean? It looks exactly like this.
GRD Meaning inside ring Cartier love ring
Is this a real gold ring
I have a old ring it looks real i think it’s gold but the only stamp it has is • 4 8 on it what does this mean
I know the ring is CZ but what is the other stamping?
I have a ring that looks vintage and has js stamped on the inside,what does that mean ??
The “JS” stamp inside a ring often indicates the maker or designer, which can vary based on the specific jewelry piece. It might refer to a specific jeweler or company that produces vintage-style jewelry. Sometimes, “JS” could also denote a particular type of metal or alloy used. To get more precise information, you might want to check our jewelry appraisal service 🙂 https://quickjewelryrepairs.com/repair/jewelry-appraisal/
Can anyone please give me some insight as to what these four digits stamped on my anniversary band mean? 6748
Thank you
The four-digit number “6748” stamped on your anniversary band is most likely a style, model, or inventory number used by the manufacturer to identify the specific design of the ring. This helps the jeweler track or catalog the piece within their collection or production line. It doesn’t relate to the metal or gemstone content but serves as an internal reference for the jeweler or retailer. 🙂
I Have A Ring That’s 14K White Gold & Natural Gemstone & Diamond Ring With A Stamp OD & On The Other Inner Side Of The Band Is 14K ! Does Anyone Know What OD Initials Stand For?
The “OD” stamp on your ring is likely the maker’s mark, identifying the jeweler or company that crafted the piece. These marks are used to trace the origin of jewelry but can vary widely between manufacturers. If you’re curious about the specific brand or jeweler, you may avail our jewelry appraisal service! 🙂
I have an old chain that says 1-10 D & C on the spring clasp, does that mean 10 k?
The “1-10 D & C” marking on your chain’s clasp likely indicates that it is gold-filled rather than solid gold. Specifically, “1-10” means that the piece is made of 1/10th gold by weight, with a layer of gold bonded to a base metal. “D & C” is most likely the maker’s mark identifying the manufacturer. This does not indicate 10k gold, but rather that the chain is gold-filled with 10% gold content.
925 MC 7H
VERY curious on what this stamp means
The “925” stamp indicates that the piece is made of sterling silver, which is 92.5% pure silver. “MC” is likely the maker’s mark, identifying the manufacturer or jeweler who crafted the piece. The “7H” could be a production code, batch number, or model identifier, used internally by the manufacturer. Together, these marks help identify the material, origin, and possibly the specific design of the piece.
I have an opal ring, with diamonds all around. Inside there is one inscription 14K. Also just before that, the # 1420. What does the # signify?
The “14K” stamp indicates that your opal ring is made of 14-karat gold. The “#1420” is most likely a manufacturing or style number used by the jeweler or manufacturer to identify the specific design or model of the ring. This number helps distinguish the piece within their production line or catalog. It doesn’t usually indicate anything about the gold or gemstones but helps track the design or order.
What does A-1 mean on 10k gold pendant please?
The “A-1” stamp on your 10k gold pendant likely refers to the quality rating or could be a manufacturer’s code. In some cases, “A-1” is used to signify high-quality craftsmanship. However, it can also be a maker’s mark or internal code used by the jeweler or brand. The “10k” confirms that the pendant is made of 10-karat gold, containing 41.7% pure gold.
Hi there, I have pieces of a watch. On a gold part of the watch I see a XZ 30. Anybody know what that means?
The “XZ 30” mark on the gold part of your watch could be a manufacturer’s code or reference number. These marks are sometimes used by watchmakers to indicate a specific model, series, or batch. If it’s an older or vintage piece, it may also be a code unique to that brand or model year. If you’d like to have it looked at, you may check out our appraisal service! – https://quickjewelryrepairs.com/repair/jewelry-appraisal/
Can someone tell me what a 10K GF V over diamond stamp inside my wedding band means?
The “10K GF” stamp means that your wedding band is made of 10-karat gold that is gold-filled (GF). Gold-filled jewelry has a thick layer of gold bonded to a base metal, which is more durable than gold plating. The “V over diamond” is likely the maker’s mark or manufacturer’s symbol, identifying the jeweler or company that made the piece. This combination indicates a gold-filled wedding band with a jeweler’s specific mark.
I have a silver coloured ring that has just 750 stamped on it no other marks
What does that mean
The “750” stamp on your ring indicates that it is made of 18-karat gold, which is 75% pure gold. Even though the ring appears silver-colored, it may be white gold, which is a mixture of gold and other metals like palladium or nickel to give it a silvery appearance. If there are no other marks, it’s likely a simple 18K gold piece, possibly white gold. 🙂
Hi. I have a string of 7.5 mm cultured freshwater pearls with a clasp on it that’s says 14k and underneath it says china???
Hi! The “14K” stamp on the clasp indicates that it’s made of 14-karat gold. The “China” mark means the clasp was manufactured in China. It’s common for pearl jewelry, including cultured freshwater pearls, to have gold clasps made in China, which is a major producer of pearls and fine jewelry. 🙂
I have a necklace that appears gold. It is a vintage choker style. Each piece has a number stamped on the back. Up the back of the left side is numbered 1-30 and the right side is the same 1-30 like the order the pieces go in for assembly however I can not find another like it anywhere that has these numbers on the back.
The numbers on your vintage choker likely indicate the order for assembly, a method used by manufacturers for intricate pieces. This suggests it might be a custom or limited-production piece, adding to its uniqueness. If you’d like to know more about the piece, you can try our appraisal service here – https://quickjewelryrepairs.com/repair/jewelry-appraisal/ 🙂
Hi, guys! I have this ring (looking like proposal) and it’s “CI 14K” stamped. I guess 14K is a gold..? But what does “CI” mean?
Hi there! Yes, you’re right—”14K” indicates that the ring is made of 14-karat gold, meaning it’s 58.5% pure gold. The “CI” is likely the maker’s mark, representing the jeweler or manufacturer who crafted the ring. Maker’s marks vary, so “CI” could be specific to a certain brand or jeweler. If you’re interested in finding out more about the maker, you may want to try our appraisal service – https://quickjewelryrepairs.com/repair/jewelry-appraisal/ 🙂
What does Pta – 900 with initial MP on it mean?
“Pta – 900” refers to platinum with a purity of 90%, which is a common standard for high-quality platinum jewelry. The “MP” is likely the maker’s mark, identifying the jeweler or manufacturer who crafted the piece. Platinum jewelry is typically marked with a purity stamp like “900” to indicate its metal content, and the maker’s mark helps trace the piece back to its origin. Hope this helps! 🙂
my necklace is stamped with 14K and the letter H
The “14K” stamp on your necklace indicates that it is made of 14-karat gold, meaning it contains 58.5% pure gold. The letter “H” is likely a maker’s mark, representing the manufacturer or jeweler who crafted the piece. Maker’s marks can vary, so if you’re curious about the specific jeweler, you can check out our appraisal service here – https://quickjewelryrepairs.com/repair/jewelry-appraisal/ 🙂
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