Fine Jewelry Authentication Specialist
Fine jewelry authentication specialist. Focuses on hallmarks, stone setting, and metal finishing.
Published November 2026 · Contact
What a Genuine Clash de Cartier Ring Looks Like
The Clash de Cartier ring is a band made of studded links: square pyramids across the face, small cone-shaped studs along the edges, all joined together so that the band flexes. It is sold in several golds and widths, with and without stones, and it is resold constantly. Because the studs and links are the part everyone can see, they are also the part counterfeiters copy first, and a buyer who only compares the look of the studs has not checked anything that is hard to copy.
The harder checks are on the inside of the band: one engraved line and two small stamps. This guide goes through them on a genuine rose gold Clash ring, then through the construction, the box and what a matching set of marks does and does not prove.
Worth knowing
This is a genuine reference guide. The ring it describes passed authentication. We do not have confirmed counterfeit Clash rings to set beside it, so there is no table of fake tells below and no red-flag checks. If that changes, this guide will be upgraded. The engraving and the finish of the links can vary with the size, the metal and the year, so compare with a ring of the same kind.
Use our free Cartier Serial Checker to check the engraved serial against the formats Cartier is documented to use.
Check My Serial →The Construction: Pyramid Links and Cone Studs
On the genuine ring the face is a row of faceted pyramids with flat, mirror-polished sides and sharp edges where the facets meet. Smaller cone studs stand along the edges of the band, one beside each link, with a round, smooth profile. The links are joined by short pins that you can see between them, which is why the band bends slightly instead of being one rigid piece.
Look at three things on your own ring. The pyramids should be even in size, with crisp edges and the same angle on every facet. The cones should stand evenly along both edges, none tilted or sitting lower than its neighbour. And the pins between the links should be neat and similar from link to link. On a band with this many small parts, one badly finished link is hard to explain. A tidy set of studs does not prove the ring, since a careful fake can finish them well, but sloppy ones are a reason to compare more closely.
The metal reads as a warm rose gold in every photograph, and the polish is bright rather than satin. Colour is easy to alter with lighting, so do not judge the gold by tone alone.
The Engraved Line Inside the Band
The inside of a Clash band is a narrow strip with the studs standing on either side of it. The engraving runs along that strip in a single line of small, fine characters, in this order:
- the script © Cartier,
- a two-figure size, which is 62 on the ring we photographed,
- a serial of three letters and three digits, here POH975,
- Au 750, the 18-carat gold mark,
- then two small stamps.
The "Cartier" script is a fine slanted hand, the size and serial are in clean upright capitals and digits with even spacing, and the whole line follows the curve of the strip. The characters are shallow and sharp-edged rather than deep and wide. The marks are small: expect them to be about the height of a pinhead, so a photograph taken along the band in good light reads far better than one taken from the front.
The Two Stamps After the Gold Mark
After Au 750 come two small stamps, side by side. The first is a lozenge, a diamond-shaped outline with a small mark inside it, which is a maker's mark. The second is a small eagle's head, drawn in profile, which is the stamp used in France for 18-carat gold.
Both are tiny and both are struck cleanly, with defined outlines and no rough edge around them. Their shape is worth knowing, and so is the way they are cut. A stamp whose outline is soft, doubled or ragged is worth a closer photograph, and one that is missing altogether on a ring that should carry it is a reason to compare with a verified ring before you pay.
How This Line Compares with Cartier's Other Gold Jewelry
The same elements appear on our other genuine Cartier jewelry guides, in a slightly different order. On the Juste un Clou bracelet the line reads signature, size, a serial of three letters and three digits, Au 750, then a small hallmark. On the Clash ring the order is the same, and the hallmark is a lozenge and an eagle's head. On a genuine white gold Love bracelet we reviewed, the size comes first and the serial, three letters and three digits, comes before Au 750, with an assay mark after it.
So a serial of three letters and three digits is a pattern you will meet across Cartier jewelry. That makes it a poor test: it is easy to copy, and a counterfeit Love bracelet we reviewed copied the layout closely. What it is good for is a first read of your own piece. The Cartier serial number guide explains what a Cartier serial can and cannot tell you.
The Box and the Paperwork
One of the photographs of this ring shows the box it came in: a red Cartier box, open, with a dark lining on the inside of the lid and the gold Cartier script on it. Papers lie beside it, but they are out of focus and unreadable, so we cannot tell you what a genuine Clash certificate or card looks like from them.
Packaging is the easiest part of a set to buy separately, so it tells you the least. If your ring comes with a certificate, check that the serial written on it is the serial engraved on the band and that the size matches. A matching pair is what you expect from a ring bought new, and it is still only one more mark to compare.
What a Matching Mark Does and Does Not Prove
An engraved line in the right order, the two stamps after it and a box with a matching serial are what a genuine Clash ring shows. Fakes copy the layout of all of them, so a match proves nothing on its own. What decides it is how the marks are cut: the depth, the spacing, the shape of the script and the sharpness of the two stamps, compared with a verified ring of the same metal and size.
Weight, the spring of the links and the way the band moves on the finger are checks done with the ring in your hand, and they depend on the size and the metal. Our own photographs show the studs and links well, but the engraving is what to send when you want a ring checked.
When to Get a Professional Opinion
If you are paying a real price for a Clash ring, or the serial, the stamps or the finish of the links look wrong to you, have the ring reviewed against verified examples before you buy. You can get a Cartier piece checked from photos of the engraved line, the two stamps, the links and the box. Close photographs taken along the inside of the band, in daylight, are the ones that read best.
FAQ
How can you tell if a Clash de Cartier ring is real?
Start with the engraved line on the inside of the band: the Cartier script, a two-figure size, a serial of three letters and three digits, Au 750, then a lozenge-shaped stamp and an eagle's head. Then look at the links: even pyramids, evenly standing cone studs and neat pins. No single mark settles it, because fakes copy the layout.
Where is the serial number on a Clash de Cartier ring?
On the inside of the band, in the engraved line after the Cartier script and the size and before the Au 750 mark.
Is a serial of three letters and three digits normal on Cartier jewelry?
Yes, it is one of the layouts you see on Cartier jewelry, including genuine Love bracelets and Juste un Clou bracelets as well as this Clash ring. A serial in that shape is expected, but it is not a test, because counterfeits copy it.
What are the two small stamps next to Au 750?
On the genuine ring we photographed they are a lozenge-shaped maker's mark and an eagle's head. Compare their outline and depth with a verified ring, since the shape alone is easy to copy.
Can you authenticate a Clash de Cartier ring from photos alone?
Yes. What decides it is the engraved line, the two stamps and the finish of the links, so clear close photographs of those, plus the certificate if you have one, are what to send.
Do you have a list of fake Clash ring tells?
Not yet. We do not have enough confirmed counterfeit Clash rings to publish a list we would stand behind, so this guide shows a genuine ring only.
