diamants blancs bruts et taillés sur sable brun

Our white diamonds

Whether rough or cut, allow yourself to be charmed by our quality diamonds.

Learn more

27060801_Subscription_XXL2_EN

Presentation and observation of
diamonds with magnifying glass

Eternal beauty at your fingertips.

Learn more

diamant rond d'investissement

Investing in diamonds

For a good investment, choose a rare and exceptional gem.

Learn more

diamant de couleur jaune

Our coloured diamonds

Discover a universe of exceptional gemstones.

Learn more

3

Our coloured gemstones

Add a touch of colour to your life, give in to the temptation.

Learn more

Guaranteed appraisal

Are you looking to appraise or sell a diamond ?

Do not hesitate to contact us and make an appointment at our Paris or Antwerp offices. Our team of gemmologists is at your disposal.

In the case of an appraisal (for inheritance purposes or for your insurance company for example), we will provide you with a document called Replacement Value. This includes the main characteristics of your diamond as well as its value at the current market price.

Why choose DIAMANT-GEMS ?

A sole intermediary

DIAMANT-GEMS is the only intermediary between the mine and the jewellery.
We buy rough diamonds in Africa and in Canada; once they are cut in Antwerp, we present them on the Antwerp and Hong Kong Diamond Bourses.

By limiting the number of intermediaries, we can guarantee wholesale prices to our clients.

Custom-made creations

A jewellery service is also at your disposal. We have a large choice of diamond rings, earrings, necklaces and bracelets in stock.

In addition to these, our custom-made creations are very popular. Our designers are at your service.

Certified diamonds

All of our diamonds are certified by renowned laboratories (GIA, HRD and IGI) and feature a laser-engraved number in order to easily identify them.

Sealing can be performed by the laboratories on request.

More than 20 years’ experience.

Our activity has been in operation for over 20 years.

Thanks to our experience within the Antwerp Diamond Bourse, we are at your service to advise you in the process of buying and selling or for appraisal.

A team at your service

We are at your disposal to meet you in order to present our gemstones.

You will see the gemstones in optimum conditions : lighting, situation, inspection of inclusions with a magnifying glass, colour comparison, etc.

Contact Diamant Gems

KOH DIAMONDS
ANTWERPEN - BELGIUM
Tel: +32(0)3 226 10 26

KARAT
PARIS - FRANCE
Tel: +33(0)1 47 42 56 56

Contact us