14kt vs 9ct Gold: What the High Street Doesn't Tell You
Walk down any UK high street and most of the gold jewellery in the windows is 9ct. It looks like gold, it's sold as gold, and legally it is gold — just only 37.5% of it. The rest is other metals. Very few shops volunteer that, because the number that matters is stamped in millimetre-high digits where nobody looks: the hallmark.
The hallmark doesn't lie
UK law requires gold over 1 gram to be independently tested and struck by an assay office before it can be sold as gold — one of the oldest consumer protections in Britain. The number in the hallmark is the purity in parts per thousand:
- 375 = 9ct — 37.5% pure gold
- 585 = 14kt — 58.5% pure gold
- 750 = 18kt — 75% pure gold
So a 14kt piece carries around 56% more actual gold than the same piece in 9ct. Richer colour, more precious metal in your hand, and a number struck into the metal by an independent assay office to prove it. Our full explainer, with side-by-side comparisons, is on the 14ct vs 9ct page.
Why doesn't the high street just use better gold?
Cost. 9ct is the cheapest metal that can legally be called gold, and on a mass-produced piece the difference goes straight to margin. There is nothing illegal about 9ct — it's honest gold at its stated purity — but it is worth knowing that "solid gold" on a label spans a very wide range, and that two similarly-priced rings can contain very different amounts of the metal you think you're buying.
Where we stand
Every gold piece we make starts at 14kt — never 9ct — and everything over a gram is hallmarked at the London Assay Office. Check any hallmark of ours and it reads 585 or 750. That's the whole point of the hallmark system: you don't have to take a jeweller's word for it.
Does 14kt wear well?
Yes — arguably the best of both worlds. Pure gold is soft; alloying adds strength. 14kt is noticeably richer in colour than 9ct while being harder-wearing than 18kt, which is why it's our everyday recommendation. 18kt gives the deepest colour and highest purity for those who want it. Both come in white, yellow or rose across our rings, earrings and bracelets.
The quick checklist
- Ask what the hallmark will read — 375, 585 or 750.
- Compare like for like: a 9ct price against a 14kt price is not a fair fight.
- Over 1 gram of gold with no UK hallmark? Walk away.
Questions about a specific piece? Get in touch — we'll tell you exactly what's in it.