Hallmark
Also called hallmarking, purity stamp, quality stamp
A hallmark is a small stamp pressed into a piece of jewelry that records its metal purity and, in many markets, the maker and the office that tested it. It is usually placed somewhere discreet such as the inside of a ring band or the back of a clasp.
In other words, it is the tiny stamp inside a ring that tells you what the metal is and who made the piece.
What the marks say
Hallmarking rules differ by country, so what you find on a piece depends on where it was made and sold. The common elements are the same though.
- Purity: 750 for 18k, 585 for 14k, 925 for sterling silver.
- Maker's mark: the registered stamp of the manufacturer or brand.
- Assay office mark: the body that tested the metal, used in the UK, India, and other regulated markets.
- Date letter: the year of testing, in markets that require it.
Hallmarks and renders
A hallmark is real, physical, and tiny, and it lives on the inside of a band where a product photograph rarely goes. It normally does not appear in a render, and that is the right call: an invented hallmark on a product image is a claim you did not make.
If your CAD file has the hallmark modelled and you want it visible in one of the images, tell us in the order note and we will frame an angle for it. We render what is in your file, we do not add marks of our own.
Questions about Hallmark
Do you add a hallmark to renders?
No. We render what is in your CAD file. If the mark is modelled and you want it shown, ask and we will include an angle for it.
What does 750 mean on a ring?
It means the metal is 75% gold, which is 18k. 585 means 14k and 925 means sterling silver.