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18ct gold · 750 fineness

Sell 18ct gold by post across the UK

18ct gold is 75% pure gold. Ask first, send a photo on WhatsApp, post with a free insured Royal Mail label, and get a written, XRF-confirmed offer before you decide anything.

Free insured postageXRF assayNo-obligation offerTracked and signed for
How much is 18ct gold worth per gram?18ct gold is 75% pure, so it is worth 75% of the pure-gold rate per gram, less our margin. Indicative 18ct rates are on our gold calculator, but they move with the live market. Your firm offer is set after an XRF assay confirms the purity and weight of your specific items.

Ask first. Post later, or not at all.

You can ask as much as you like before anything is sent. Photos on WhatsApp give us enough to offer a quick indicative figure on your 18ct gold, and we will tell you straight if something is not worth posting. Nothing moves until you say so.

Selling with GoldPaid is done entirely by post, anywhere in the UK. There is no shop to find and no pressure at a counter, because there is no counter.

What 18ct gold is

18ct gold carries the fineness mark 750. It is 75% pure gold, with the rest made up of other metals for strength and colour. It is the premium standard for fine British jewellery, engagement rings, quality wedding bands and better dress pieces are often 18ct. You may also see it stamped 18k, 18ct or .750.

Whatever the carat, GoldPaid pays for the confirmed gold content. 18ct items are weighed and XRF-assayed exactly like any other, a piece marked 750 is never paid at the wrong rate. For how the marks work, see the gold hallmark guide.

What 18ct gold we buy

  • 18ct jewellery, rings, chains, bracelets, earrings, lockets and pendants
  • Broken, worn, single or damaged 18ct pieces, condition does not matter, we pay for the metal
  • Hallmarked and unhallmarked 18ct gold
  • 18ct items mixed in with other carats. We separate by carat before valuing

Not sure of the carat, or cannot read the mark? Send a photo on WhatsApp, the XRF assay confirms it for certain at no cost, so you never need to identify anything before posting.

How selling works here

  • Start on WhatsApp. A couple of clear photos of your 18ct gold are enough for us to give you a quick indicative figure at no charge.
  • Claim your free postage. We issue a prepaid, tracked, signed-for Royal Mail Special Delivery label, or a QR code for the Post Office.
  • Post in your own time. Any padded envelope works, and there is no deadline to meet.
  • Get a written valuation. Each item is weighed on calibrated scales and read by XRF spectrometry, and the itemised offer is sent to you in writing.
  • Accept or walk away. Acceptance means payment by Faster Payments; declining means a free, fully tracked return.

Where the figure comes from

There is no guesswork in the offer. We confirm purity by XRF assay, weigh on calibrated scales, and price against the live market rate on the day. Every one of those numbers appears in the written breakdown you receive before deciding. The full method is on how we value gold.

Indicative 18ct rates are published on our gold calculator, currently around £76 per gram. That figure moves with the live market and is a guide only; your firm offer follows the XRF assay of your specific items.

An offer can only ever be firm once your specific items have been inspected. It depends on weight, confirmed purity, hallmarks, any stones or non-precious-metal parts, condition, and the live market. Any rates shown elsewhere on this site are indicative guides, not quotes.

Postage and cover

Royal Mail Special Delivery cover may be available up to £2,500 depending on the postal method and cover level used. The label we send is Royal Mail Special Delivery Guaranteed: tracked end to end, signed for on delivery, and arranged with that compensation cover per parcel. If you believe your items are worth more, message us before posting and we will arrange the right approach, whether that is additional cover or splitting items across more than one parcel. Full detail is on postage and insurance, and is it safe to post gold? walks through posting valuables safely.

Changing your mind is free

Declining costs you nothing. If the written offer does not suit you, say so, and your items come straight back by tracked, insured Royal Mail post at our expense. No fee, no questions, no chasing. See what happens if I decline the offer for the step by step.

Who this helps

This page suits people selling quality jewellery, 18ct engagement and wedding rings, fine chains and dress pieces. At 75% pure, 18ct is worth substantially more per gram than 9ct, so even small 18ct items can carry real value.

The payment step

Acceptance triggers payment: a direct bank transfer by Faster Payments, to the account you give us. Nothing to bank and nothing to chase.

Built to be trusted, not just believed

  • Owner-run, with a named founder accountable for the service
  • Every item XRF-assayed, the result shown to you in writing
  • Free insured postage both ways, so a valuation is genuinely no-obligation
  • Honest about its limits, including when a specialist would suit you better
  • No fabricated reviews and no invented numbers, anywhere on the site

Common questions

Do you buy broken or unhallmarked 18ct gold?

Yes. Condition does not matter. We pay for the metal content, so broken, worn and single items are all welcome. Unhallmarked gold is fine too; the XRF assay confirms the carat for certain.

Is 18ct gold worth much more than 9ct?

Yes, 18ct is 75% pure against 9ct’s 37.5%, so gram for gram it is worth roughly twice as much in gold content. Even small 18ct pieces can carry real value. Your firm offer follows the XRF assay of your specific items.

What if I decline the offer?

Your items are returned to you free of charge by tracked, insured Royal Mail post. There is no fee for declining and no follow-up pressure.

Related pages

A photo, a quick reply, then your decision

Sell your 18ct gold, on your terms

Send a photo on WhatsApp, ask anything, and request your free insured label when you are ready. No obligation. Free tracked return if you decline.

Send a photo on WhatsApp