Lab grown diamonds

Celebrating inner & outer diamond beauty

Madestones are diamonds created in a laboratory. Timeless white
diamonds and diamonds of beautiful striking color. An affordable,
conscientious and modern choice.

A laboratory grown diamond is a diamond. There is no difference between a diamond occurring naturally and a laboratory grown diamond except ‘origin’.
The most respected diamond grading laboratories the Gemological Institute of America, HRD and the International Gemological Institute provide diamond grading reports certifying that laboratory grown diamonds are exactly the same as natural occurring diamond except that one is created by science.

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Our Company

Madestones is an initiative from Thierry Silber.

Thierry has 38 years of experience trading diamonds in Antwerp-Belgium, the world’s diamond capital. Madestones is Thierry’s personal vision for the future of the diamond business and is certified carbon neutral. Click on the label to learn more.

Madestones are a product of modern technology. They marry science to social values. Thierry wants to share his passion for Madestones with everyone.

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Leading the Way in Genuine Sustainability

Madestones is an initiative from Thierry Silber.

Madestones has set a new industry benchmark by becoming the first lab-grown diamond producer to achieve full life cycle CO2 Neutral certification. Partnering with South Pole, we ensured every step—from production to delivery—meets the highest environmental standards. Validated by Vinçotte, this milestone reflects our commitment to true climate action.

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UK and Europe Diamond Trader and Supplier

Attractive Prices

We are a trusted diamond distributor who specializes in supplying the highest quality lab-created diamonds UK and around the world at affordable prices.

If you want the best-value ethical gemstones, choose Madestones. As experienced diamond trader, we are proud to work with esteemed partners – diamond dealers, jewellers, designers and businesses who share our values and passion for lab-grown diamonds.

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Winner Professional Jeweller Award

UK 2018 Award winner Best Supplier of Precious Metals and Stones

We are very proud to announce that we have won the PJ award for the best supplier of Precious Metals and Stones 2018 in the UK. We want to thank all our customers and friends for their vote. Your overwhelming support made this happen for us. We see this achievement as a reward for all the work we do to successfully meet our customer needs, and at the same time it motivates us to raise our standard of support and service even higher.

The Precious Metals and Stones Supplier of the Year indicates interesting trend in the industry. Because lab-grown diamonds continue to grow in popularity, the UK has been turning to Madestones for its products and expertise, and as such, were quick to back the company in the Professional Jeweller Awards poll.

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