14ct vs 9ct — More Gold Than the High Street
Gold is the part of your jewellery you will see and feel every day, so it is worth choosing it on purpose. Here is a plain, honest guide to 14ct vs 9ct gold in the UK: what each is made of, how they look and wear, what the hallmark tells you, and how to decide.
The short answer: 14ct gold is 58.5% pure gold and 9ct is 37.5%, so 14ct holds about 56% more gold. Choose 9ct if keeping the price down matters most. Choose 14ct if you want a richer colour and more gold in a piece you will wear every day. Our solid gold jewellery is made in 14ct and 18ct, set with lab-grown diamonds.
9ct vs 14ct vs 18ct at a glance
| Carat | 9ct | 14ct | 18ct |
|---|---|---|---|
| Pure gold | 37.5% | 58.5% | 75% |
| UK hallmark number | 375 | 585 | 750 |
| Other metals in the mix | 62.5% | 41.5% | 25% |
| Colour (generally) | Lighter, paler tone | Richer, warmer tone | The deepest, richest tone |
| Price (generally) | Lowest | Middle | Highest |
| Gold items hallmarked in the UK in 2023 | 2,090,529 | 285,358 | 674,173 |
What “ct” means
Carat (ct) describes the purity of gold, not its weight, and it has nothing to do with the carat weight of a lab-grown diamond. Gold is divided into 24 parts. 24ct is pure gold, 18ct is 18 parts gold and 6 parts other metals, 14ct is 14 parts gold, and 9ct is 9 parts gold. Strictly, 14 parts in 24 is 58.3%, but the UK hallmark standard for 14ct is 585 parts per thousand, and a 585 mark guarantees at least 58.5% pure gold.
Other metals are mixed in because pure gold is too soft for everyday jewellery. The mix adds strength and sets the colour.
Colour: how 9ct and 14ct look different
Yellow gold is gold mixed with silver and copper. Rose gold uses more copper, which gives the pink tone. White gold is gold mixed with white metals such as palladium or silver, and it is usually finished with rhodium plating for a brighter white.
Because 14ct has more gold in it, it generally looks richer and warmer than 9ct, which has a lighter, paler tone. 18ct is richer again.
Durability: 9ct vs 14ct
Pure gold is soft, so all gold jewellery is mixed with other metals for strength and durability. Between 9ct and 14ct the difference is small. 9ct is often described as slightly harder and 14ct as slightly softer in comparable alloys, and the exact mix of metals matters more than the carat number. The claws and setting that hold a stone usually take more wear than the band, so how a ring is made matters as much as its carat.
Price: what moving up a carat costs
9ct contains the least gold of any UK gold standard, so it generally costs the least. We do not make 9ct, so we cannot show you a 9ct price, but here is what stepping up from 14ct to 18ct costs on the same design. Only the metal changes. These are our prices on 24 October 2026, and they are the same in white, yellow and rose gold.
| Design | 14ct | 18ct | Difference |
|---|---|---|---|
| Sylvie round solitaire lab-grown diamond ring | £1,650 | £1,995 | £345 (about 21% more) |
| Annabel interlocking double heart ring with a round lab-grown diamond | £345 | £465 | £120 (about 35% more) |
| Sunna round lab-grown diamond cluster huggie earrings | £475 | £635 | £160 (about 34% more) |
How to read a UK hallmark
In the UK it is an offence to describe an article as gold unless it is hallmarked, and that applies to online sellers too. The main exception is small items: gold weighing under 1 gram is exempt. A UK hallmark has three compulsory marks:
- The sponsor’s mark, the registered mark of the maker or company that sent the piece for testing. Ours is TLJ.
- The fineness mark, the purity in parts per thousand: 375 for 9ct, 585 for 14ct, 750 for 18ct and 925 for sterling silver. The shape around the number shows the metal.
- The assay office mark, showing which of the four UK assay offices tested it. The leopard’s head is London’s.
A date letter can also be added, but it has been optional since 1999. Wherever you shop, turn the piece over and read the number. Our Hallmarking & Materials page shows the marks on our own pieces.
Why 9ct is so common in the UK
The Assay Offices’ figures show it. Of the 3,515,075 gold items hallmarked in the UK in 2023, 2,090,529 were 9ct, about 59%. Only 285,358 were 14ct, about 8%. These count items sent for hallmarking, not items sold. 375 is the lowest purity that can carry a UK gold hallmark, and 9ct has the least gold in it, which generally means the lowest price.
Which should you choose?
- Choose 9ct if the lowest price matters most, or you like a paler tone. We do not make it, and we would rather tell you so.
- Choose 14ct if you want a richer colour and a higher share of gold for everyday wear, at a lower price than 18ct. It is the carat to start with if you are choosing a ring you will wear daily.
- Choose 18ct if you want the deepest colour and the most gold, and a higher price suits you.
Every gold piece we make is solid 14ct or 18ct gold, never gold-plated, and every stone is a lab-grown diamond. Each piece is made to order, so allow around four weeks. Browse our lab-grown diamond engagement rings, our solitaire rings, such as the Sylvie round solitaire lab-grown diamond ring, or our lab-grown diamond stud earrings, and pick 14ct or 18ct on each product page.
14ct vs 9ct gold: your questions answered
Is 14ct better than 9ct?
It depends what you value. 14ct is 58.5% pure gold against 37.5% for 9ct, so it holds about 56% more gold and has a richer, warmer colour. 9ct costs less and is often described as slightly harder. If you want the most gold for everyday wear without moving up to 18ct, 14ct is the usual middle choice.
Is 14ct worth the extra money?
If a richer colour and a higher share of gold matter to you, many buyers find it is. 14ct costs more than 9ct because there is more gold in it. If your budget is the main thing, 9ct does the job. We make our gold pieces in 14ct and 18ct, so we can show you the real step up: on the three designs in the table above, moving from 14ct to 18ct adds between £120 and £345.
Is 9ct or 14ct more durable?
The honest answer is that the difference is small. Sources describe 9ct as slightly harder and 14ct as slightly softer in comparable alloys, but the exact mix of metals matters more than the carat number. The claws and setting that hold the stone usually take more wear than the band, so the way a ring is made counts as much as its carat.
Is 9ct real gold?
Yes. A 375 hallmark means at least 37.5% pure gold, and 375 is the lowest purity that can carry a UK gold hallmark. It is a genuine, legal gold standard. It simply contains less gold than 14ct (585) or 18ct (750).
Is 14ct better for sensitive skin?
A higher carat means a smaller share of other metals in the mix: 62.5% in 9ct, 41.5% in 14ct and 25% in 18ct. Fewer other metals may mean less chance of irritation for some wearers. If you know a particular metal bothers your skin, ask the maker which alloy is used before you order, especially for white gold. You are very welcome to email us and ask.
Do you make 9ct jewellery?
No. Our solid gold pieces are made in 14ct and 18ct, and we also make lab-grown diamond jewellery in sterling silver. We would rather tell you that plainly than leave you guessing.
Still weighing up a particular piece? Ask us directly. Email info@thelabjewellers.com or message us on WhatsApp.