Looking to sell your diamond?

We’ll be more than happy to offer a great price for your items.

4Cs Diamonds is one of London’s premium diamond jewellery dealers. We have a wide selection of items on sale at the UK’s best prices. All our stones are fully certified, providing confidence for those seeking high quality engagement rings and more competitive prices. If you have jewellery you no longer wear you can talk to us about selling your diamond ring and we can advise the best prices for your precious stones whilst offering advice on selling your jewellery. For those interested in selling a diamond ring, our experienced team keeps a careful eye on the global market, ensuring you get a price in line with the markets when trading in your items.

Need to raise Cash?

Bills to pay? Possibly a new kitchen? Home improvements? Broken relationship? How about a well deserved holiday?

Let us make you an offer! Instant offers. Instant payment. We trade from safe and secure premises in a dedicated jewellery suite at 100 Hatton Garden, London.

Get an Offer

Instant offers on certified GIA, HRD & IGI diamonds

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A selection of our bespoke engagement rings


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Special Offer

Special Offer 1

Round Brilliant Diamond. 1.44 carat £12,900

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About 4Cs

The founder, Daniel Rosen, is a member of The London Diamond Bourse and World Federation of Diamond Bourses, and has been since 2000. He is a graduate from The Institute for Diamond Studies and has more… Read More ›

Sell Diamond & Engagement Rings Online

As a leading precious gemstone merchant, 4Cs Diamonds is able to offer a complete design service focusing primarily on engagement rings, wedding bands and fine jewellery. Trading from a safe and secure suite at 100 Hatton Garden, we invite clients to visit our office for consultations in a relaxed and comfortable atmosphere.

We also purchase diamonds and jewellery and can make an on the spot offer. Payment is immediate and funds are cleared in your account before you leave the office.