Brazil
A major jewellery economy with no government hallmark: Brazilian pieces carry only a self-declared fineness number — and 18-carat gold, “750”, is the market standard.
In the atlas: Sé & Downtown
Voluntary marking
Brazil has no assay office and no mandatory fineness mark; title is self-declared under ABNT NBR ISO 9202 (adopted 2016). The one binding federal rule polices cadmium and lead, not purity.
No assay office; fineness self-declared to a voluntary ISO-based standard.
What you'll see struck
750 (teor)
Millesimal title
The purity in parts per thousand; 18K/750 dominates the market. ISO 9202 dropped karat labelling in 2016.
925 · prata de lei
Sterling silver
“Prata de lei” is 925 (or 950) standard silver.
Maker's mark
Voluntary
A maker-chosen mark vouches for the title; there is no official state assay stamp (contraste).
Fineness
- Gold
- 375 · 417 · 585 · 750 (dominant) · 916 · 999
- Silver
- 800 · 925 · 950
Decode a mark you've found
Seen a number struck inside a piece? Read what it means, and how Brazil marks it.
Heading there to buy? These district buyer's guides show how to read a hallmark at the counter, what a fair price looks like, and how to spot a fake.
- Bijuterias e joias Verified
- Portaria 123/2021 Verified
* Brazil is not a Hallmarking Convention member and has no national assay mark — the identifying mark is the fineness number alone.
A reference guide, not an authentication service. Marks vary by date and metal; consult the relevant assay office or standards body for definitive identification.