At te heart of it since 1840.

At the heart of it. Since 1840.

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Why not explore our new Luna Collection?

The new

Royal 201 Signature C Collection

Royal Coster Diamonds

With almost 200 years of experience, we are experts in diamond polishing. We have made jewelery for Prince Napoleon, for Empress Sisi and in 1852 Royal Coster's artisans were chosen by Queen Victoria to re-polish the largest diamond in the world; the Koh-I-Noor. Located at the Museumplein in Amsterdam, we are at your service for diamond jewellery, high-end watches, tours and workshops.

An ode to perfection

Experience the perfect combination of modern technology, creativity and craftsmanship during this exhibition.

Discover the sparkle

The colors of the rainbow are the foundation of our unique Rainbow Collection

all the colours of the rainbow from the fundament of our unique rainbow collection, jewelry, ring, bracelet, necklace

Discover the sparkle

The colors of the rainbow are the foundation of our unique Rainbow Collection

diamond crafting ideas

Design your own ring

Send a sketch of your own design and let our goldsmiths fulfill your wish

Share our knowledge

Learn more about the magic of diamonds

Amsterdam; City of Diamonds - Royal Coster Diamonds

Amsterdam; City of Diamonds

How did Amsterdam become the City of Diamonds? Amsterdam has been the City of Diamonds for more than 400 years. The story of how Amsterdam became the diamond capital of...

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Brief History of Diamonds - Royal Coster Diamonds

Brief History of Diamonds

In the hectic days of constant rushing around, the little sparkle of a diamond helps you pause for a second and forget about the worries of the world. Take that...

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free diamond tour & workshops
free diamond tour & workshops

Visit Royal Coster

Book a tour and learn more about our rich history or visit us to see the most spectacular diamonds and jewelry