Platinum Engagement Rings
Platinum is the metal to choose when you do not want to think about the ring again. It is naturally white, so it never needs plating and never changes colour; it is hypoallergenic, so it suits skin that reacts to alloys; and it does not lose metal when it is scratched. That last property is the one worth understanding, because it is the real difference between platinum and every gold on this page.
It displaces rather than wears away
When gold is scratched, a tiny amount of metal is removed and gone. When platinum is scratched, the metal is pushed aside rather than lost — the surface dulls into a soft satin finish that jewellers call a patina, but the ring still weighs what it did. Over decades a platinum shank keeps its metal where a gold one slowly thins. If you like the original mirror finish, it polishes back in minutes; plenty of people prefer the patina and leave it.
What to know about platinum
- 950 platinum, and what the hallmark says
- UK platinum jewellery is almost always 950 — 95% pure platinum, against 75% metal content in 18ct gold. The London Assay Office marks it with the fineness number 950 and the platinum orb symbol. Anything sold as platinum over half a gram must carry that mark, which is the independent test rather than the seller's description.
- Why it costs more than the gram price suggests
- Two things stack. Platinum is denser than gold — noticeably so — which means the same ring takes more metal by weight than it would in 18ct. And it melts far hotter and works harder at the bench, so the labour is greater. That is why a platinum ring is not simply the gold price plus a percentage, and why the difference is largest on a heavy or intricate setting.
- It holds a stone more securely
- Platinum claws bend rather than snap and hold their shape under knocks, which is why a great many jewellers set important stones in platinum claws even on a gold band. If the centre stone is the point of the ring, this is a real argument and not a sales one.
- The weight is a preference, not a virtue
- A platinum ring feels substantial, and some people love that and some find it heavy on the hand all day. It is worth trying both metals at the same width before deciding, because it is the one difference you cannot judge from a photograph or a specification.
Common questions
Is platinum better than white gold for an engagement ring?
For most people, yes — but not for everyone. Platinum is naturally white so it never needs replating, it is hypoallergenic, and it does not lose metal when scratched. White gold costs less and is lighter on the hand, which some people prefer. The honest test is whether you want to revisit the ring every year or two: white gold needs rhodium replating to stay bright, and platinum needs nothing at all.
Does platinum scratch?
Yes, and it shows scratches sooner than gold does. The difference is what happens to the metal: a scratch in platinum displaces metal to the side rather than removing it, so the ring dulls to a satin patina without getting thinner. Many owners come to prefer that finish. If you want the original polish back it takes a jeweller a few minutes, and no metal is lost doing it.
Why is platinum more expensive than gold?
Partly the metal price, but mostly two other things. Platinum is denser, so the same ring needs more of it by weight than 18ct gold would. And it has a much higher melting point and is harder to work, so it takes more time at the bench. The gap is widest on heavy or intricate settings and narrowest on a fine plain band.
Does platinum turn your finger green?
No. That reaction comes from copper in an alloy, and 950 platinum is 95% pure with no copper in it. It is also the reason platinum is the usual recommendation for anyone whose skin reacts to jewellery — there is very little in it to react to.
Compare the other metals
Still deciding? Bring the question to the counter — the difference between platinum and white gold on a hand is obvious in a second and impossible in a photograph. Book a time, or specify a ring yourself and choose the metal as you go.