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Our Legacy

175 of craftsmanship

Royal Coster Diamonds is the oldest and one of the world’s most famous diamond cutting factories and diamond jewelry retailers. Founded in 1840, Royal Coster has always been associated with the finest craftsmanship in the jewelry industry. And still, after 175 years, our team of highly experienced craftsmen and women produces the most beautiful diamonds you’ll ever see.

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Our Legacy

How we cut the Koh-i-noor for the queen of England

The Koh-i-Noor, translated as The Mountain of Light because of its oval cut and length, is presumably the most famous and well known diamond around. At the moment the Koh-i-Noor can be seen in the Tower of London, as part of England’s precious Crown jewels. Up to this day, through this beautiful masterpiece Royal Coster Diamonds and the English royalty share a warm relationship.

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Our Legacy

The story of how we polished the Star of the South

The Star of the South is presumably the first diamond from Brazil to receive international fame. Coster Diamonds was responsible for turning the rough diamond into the elegant oval form with its unique colour scheme. This extraordinary piece of craftsmanship continues to impress diamond cutters around the world up till this day.

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Our Legacy

How we created the diamond watch for the queen of the Netherlands

Royal Coster Diamonds has always had a close relationship with royals around the world. Based in Amsterdam, the Netherlands, the bond between Royal Coster and the Dutch Royal House is even more special. Therefore, being part of designing a diamond watch for Queen Juliana is still one of the highlights in our rich and royal history.

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Our Legacy

When we started the diamond museum Amsterdam

Royal Coster Diamonds is more than just a diamond polishing factory. In 2007 we opened our own Diamond Museum to share our passion for diamonds with the public. Here you can learn everything about diamond history, see our breath-taking diamond collection and even participate in a diamond workshop where you can actually cut your own free diamond!

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Our Legacy

Why we are the better Choice for your Diamonds

Royal Coster Diamonds is the best choice if you are looking for engagement rings, wedding rings or couple rings. With 175 years of craftsmanship Royal Coster has the knowledge and expertise to create or customize any ring based on your design and wishes.

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Our Legacy

Amsterdam City of Diamonds

For over 400 years, Amsterdam has been and continues to be a City of Diamonds. The capital accommodates quite a large number of diamond polishers and diamond retailers, some with a local presence, others with a more global radiance. Through its exceptional craftsmanship Royal Coster Diamonds has acquired a leading position among its competition and therefore has its clientele all over the world.

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Our Legacy

The Royal Legacy

Royals and diamonds have always been closely connected. Back in the days emperors and rulers used jewelry and diamonds as an expression of their power and position. These days royals wear diamonds mainly as beautiful accessories to official occasions. Often we see that jewelry worn by royals passes on from generation to generation in remembrance of their ancestors.

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Coster Diamonds