When you look for a gold piece you'll see some in 18 carat gold and others in 9 carat gold, at quite different prices. Both are real gold, but they are not the same. We explain how they differ and which one suits you, with examples from our shop.
What do carats mean?
Carats show how much gold is in the alloy, on a scale of 24. 24 carat gold would be practically pure gold, too soft for jewellery worn every day. That is why jewellery gold is mixed with other metals, such as silver and copper, which give it hardness and colour.
- 18 carat gold: 18 parts gold out of 24, that is, 75% gold. It is hallmarked 750.
- 9 carat gold: 9 parts gold out of 24, that is, 37.5% gold. It is hallmarked 375.
Both are genuine gold, not plated. The difference is how much gold the piece contains.
Differences in colour
Because it contains twice as much gold, 18 carat gold has a deeper yellow, the classic gold colour. 9 carat gold has a paler tone, because it contains a higher proportion of other metals.
Durability and care
Because it contains more alloy metals, 9 carat gold is somewhat harder and scratches a little less with wear. For the same reason, over time it can lose some of its shine sooner than 18 carat gold, so it's worth cleaning it from time to time.
18 carat gold keeps its colour better over the years and is the gold traditionally used in Spain for wedding rings, signet rings, medals and chains.
Differences in price
The price of a gold piece depends mainly on the gold it contains. Since a 9 carat piece has less than half the gold of the same piece in 18 carat, it is considerably more affordable. That makes it a good option for a gift on a tighter budget or for pieces you want to change more often.
Which should I choose?
- Choose 18 carat gold if you want the deepest gold colour, a piece for life or a piece with lasting value: wedding rings, signet rings, christening or communion medals and chains to wear every day.
- Choose 9 carat gold if you want genuine gold jewellery at a more affordable price: a small gift, earrings or a ring to combine, or a fashion piece you plan to change.
In summary
| 18 carat gold | 9 carat gold | |
|---|---|---|
| Gold content | 75% | 37.5% |
| Hallmark | 750 | 375 |
| Colour | Deep yellow | Paler |
| Price | Higher | More affordable |
| Ideal for | Wedding rings, signet rings, medals, chains | Gifts, earrings, fashion rings |
Frequently asked questions
Is 9 carat gold real gold?
Yes. It is genuine gold with 37.5% gold content, and it carries the 375 hallmark that certifies it. It is not plated or costume jewellery.
How do I know how many carats my jewellery is?
Look at the number stamped on the piece, usually on the clasp, the bail or inside the ring: 750 is 18 carat gold and 375 is 9 carat gold.
Can a 9 carat gold piece be engraved?
Yes, it is engraved just like an 18 carat piece, and in our shop engraving is free.
At Joyería Pepe Lozano you'll find our 9 carat gold jewellery collection and our full range of 18 carat gold jewellery, all with a certificate of authenticity, free insured shipping, 15 days for exchanges or returns if the piece is not engraved and payment in up to 12 interest-free instalments. If you're not sure which to choose, message us on WhatsApp.