In the heart of Amsterdam, between the Rijksmuseum and the Van Gogh Museum, you find the oldest diamond polishing factory in the world. Royal Coster is the diamond polishing factory that helped Amsterdam become ‘the City of Diamonds’. Therefore, it’s the perfect place to learn about 400 years of diamond history, the valuation of diamonds and to discover amazing diamond pieces. To share our legacy, we have created some wonderful packages for anyone who’s looking for a sparkling experience in Amsterdam. Whatever your reason is to visit Amsterdam, we always have a sparkling activity that suits you.

Free Guided Tour

Our guided diamond factory tour is completely free of charge. We give free guided tours in more than 35 languages. Get your ticket today and disco...
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The Royal Experience

Royal Coster Diamonds is the oldest diamond polishing factory in the world. Since our establishment in 1840
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Diamond Masterclass

Do you want to learn the craft of diamond polishing from the best polishers in the world? And do you want to keep the diamond that you polished? T...
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The Engagement Workshop

A diamond is a physical manifestation of love and affection. Our master craftsmen and -women create the most wonderful diamond jewelry and preciou...
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Champagne Diamond Surprise

The Champagne Surprise Tour is something we get asked for a lot at Royal Coster Diamonds by companies or exclusive parties such as galas and speci...
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Breakfast at Coster

This year, Royal Coster Diamonds celebrates its 180th anniversary. But there is an extra reason for a party. Exactly 50 years ago we settled on Pa...
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Resparkle service

Do you have old jewellery lying around that you love but looks dull and lost its original sparkle and maybe lost a diamond or has other issues? Or...
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Gold exchange service

Have you recently (re)found your old gold jewelry? Or maybe even inherited some? Then, of course, you can wear it. But if these jewels hold no sen...
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Sparkling Holland

Come in for a Royal Experience at Royal Coster Diamonds and combine it with “This is Holland”. Discover all the beautiful things the Dutch are so ...
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