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a diamond consultant

Our award winning diamond consultants help you select the best diamond jewellery for any budget.
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More Facets, More Sparkle, More Fire

Our Patented Royal 201 Diamond Shape

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A Royal Legacy

Coster Diamonds is the oldest diamond polishing factory in the world.
Our craftsman create the finest diamond jewellery for royals, celebrities, heads of state and young couples visiting Amsterdam. We have more than 400.000 visitors from Europe but also from countries such as China, The U.S.A. Egypt, Indonesia, Vietnam and many more, to learn about diamonds and our Royal Legacy that spans more than 175 years.

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175 years of craftsmanship

Read why we have been the #1 choice for high-end diamond jewellery around the world

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Contact our diamond consultants

Our award winning diamond consultants help you select
the best diamond jewellery for any budget.

Contact Us

Explore Amsterdam in all its brilliance

Amsterdam is one of the most popular tourist hotspots
due to its perfect combination of romance, culture and fun.
And a trip to the City of Diamonds is not complete without
a visit to Coster Diamonds

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#4 The largest collection of diamonds

Why we have been the best choice for your diamond jewellery since 1840

The 8 diamond guarantees

The 4 C’s of diamond valuation. Part 1: Carat

In our 4 part video series we explain everything  there is to know about what determines  the value of a diamond.

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Coster Diamonds