Hi, it looks like you're in The Netherlands!

You do know we have a Dutch website, right?

Click here for Dutch

Don't ask again

  • English
    • Dutch

Spectacular Diamond Giveaway
Win The Royal Trilogy Ring

Join giveaway

Shop your May must-haves now
During the VAT Discount Weeks

See collection

Scroll

Diamonds Since 1840

More facets, more sparkle, more fire!

Royal 201 Collection

Royal Coster Diamonds is famous for the highest level of craftsmanship for centuries. From this drive for perfection, the Royal 201 was born. Experts review the Royal 201 as the most beautiful diamond cut ever. Discover our selection of timeless classics with the sparkle that never ends.

See Collection

Diamond Jewelry

Diamond Engagement Rings
All Diamond Rings
Diamond Bracelets
Diamond Necklaces
Diamond Earrings
Diamond Watches

Book a Diamond Factory Tour

Our guided diamond factory tour is completely free of charge. We give free guided tours in more than 35 languages. Our guides tell you about our rich heritage. They explain how to evaluate a diamond and show you some amazing stones. So get your ticket today and discover the magical world of diamonds!

Book a Tour

Diamond Stories

Knowledge

Argyle Pink Diamonds

Each diamond has its own sets of characteristics, which makes them both special and unique. The rarest of them all? Pink diamonds. Specifically, Argyle pink diamonds. These diamonds are known for their recognizable composition and cover 90 percent of the world's pink diamonds. Let us guide you through everything these diamonds have to offer.

Read more

Diamond Products

The Graduation Diamond: the Most Meaningful Gift

One of the most remarkable moments from someone’s life is graduation. Whether it is graduation from high school, college, university or even getting a Ph.D. It is a moment you remember and cherish forever.  And with good reason. After all, getting your diploma is so much more than just a piece of paper. It is a true accomplishment. As a parent, grandparent, sibling, partner, or another family member you want to show how proud you are.

Read more