Three gemstones (emerald, sapphire, ruby) on a light surface with a magnifying glass and tweezers.

Search Natural Coloured Gemstones

Search thousands of natural coloured gemstones from our global supplier network. Filter by gemstone, shape, colour, carat weight and price to find the perfect stone for your next jewellery project.
Faceted teal sapphire gemstone held between two tweezers with a blurred green background

Find Your Perfect Coloured Gemstone

Our coloured gemstone search gives you access to a wide selection of natural loose gemstones sourced through our global supplier network. Browse sapphires, rubies, emeralds, tanzanites, tourmalines, spinels and many other coloured gemstones in a variety of shapes, colours and carat weights.

Use the filters above to narrow your search by gemstone type, shape, colour, clarity, carat weight and price.

Five rings with colored gemstones and clear accent stones, displayed on a white geometric surface. The rings feature yellow gold and silver bands with oval, marquise, and round-cut gemstones in red, blue, and green tones.

Natural Gemstones for Bespoke Jewellery

Whether you're a jeweller sourcing a stone for a client or choosing a gemstone for your own bespoke piece, our search makes it easy to compare individual stones and find the right option.

Our loose coloured gemstones are suitable for engagement rings, earrings, pendants, bespoke jewellery, stone replacement and custom jewellery designs.

Gold tweezers holding a diamond next to a loupe on a marble surface

Need Help Choosing a Stone?

Not sure which gemstone is right for your project? Contact us or message us on WhatsApp and we'll be happy to help you source a suitable stone based on your preferred carat weight, dimensions, shape, colour, clarity and budget.

gem cutter faceting a gemstone

Looking for Calibrated Coloured Gemstones?

For smaller stones and calibrated sizes, explore our Natural Coloured Gemstones collection, including calibrated sapphires, rubies, emeralds, tanzanites, tsavorites, peridots and more.

Blue sapphire gemstone on a textured stone surface

Responsible Sourcing

Ethically sourced with complete confidence


We believe exceptional gemstones should also be responsibly sourced.

Every natural gemstone we supply is sourced through trusted and reputable suppliers committed to responsible practices, transparency and integrity throughout the supply chain.

We carefully select our supply partners to ensure our gemstones meet the high standards of quality and responsible sourcing our customers expect.

Great selection of stones

"Wonderful. Great selection of stones and a super easy filtering and ordering process
Communication was good at keeping me informed and the stone arrived with a reasonable time. Couldn’t be happier, highly recommend"

David G

Everything arrived quickly, securely packed, and presented well

"I ordered a blue lab-grown diamond from The Carat Club and I’m genuinely impressed. Shipping and packaging were excellent. Everything arrived quickly, securely packed, and presented well. No horror story here, which is refreshing considering how many online jewellery purchases turn into anxiety exercises."

Kiin K

What an amazing find

"What an amazing find - The Carat Club, as a jeweller who makes lost wax casting jewellery it's great to have a reliable supplier of fantastic lab diamonds at a cost effective price. I would highly recommend them"

Ewa B

My only stop for diamonds

"We found the customer service extremely helpful and transparent, all questions were answered quickly. Prices and quality are great and because they're UK based they're easy to deal with on a regular basis"

Liam K

Super-excellent quality

"I purchased an IGI-certified lab diamond, and it's of super-excellent quality and exceptionally well-priced. The customer service is truly friendly and helpful. Super reliable and very serious. I will definitely buy again in the future."

Alessio Z

Best place for melee

"Have been using CC for sourcing melee for the jewellery I make for a few years now. Always easy to deal with and my order is always correct and arrives within a few days. Have reccommended to other jewellers I know!"

Katherine W

Easy to use and quality second to none

"Finding the melee you need is really simple and it always arrives well packaged and sizes correct. Quality is second to none too compared to other suppliers I've used in the past"

Marian P

Fabulous Service & Great Quality

"I ordered yesterday and was amazed when my package was delivered this morning by Royal Mail. My items were nicely packed and were of great quality and really good value. I’m very, very pleased and will definitely use caratclub again"

Julie M

Flawless experience

"Flawless experience from the beginning until the end. My items were shipped within the expected delivery date and are super sparkly! The experience was perfect. Thank you to the carat club team"

Ellie B

Found exactly what I need

"Such excellent customer care. I had a very specific need that I couldn't find at their website so I asked them for it. I got an answer in less than 24 hours offering me the perfect solution and made things very easy for me. Totally recommend this website"

Oscar D

Our Promise

At The Carat Club, we believe buying diamonds should be straightforward.

We focus on exceptional quality, honest pricing, ethical sourcing and outstanding customer service, giving jewellers and jewellery designers confidence in every purchase.

From certified centre stones to calibrated melee and matched pairs, every diamond we sell is selected with care and backed by our commitment to quality.

set of loose round diamonds in size order