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Visit in the heart of Amsterdam

Free Guided Diamond Factory Tour

A free tour in your own language

Visit the oldest diamond polishing factory in the world and enjoy a free guided tour in your own language. Watch the craftsmen and women cut and polish rough stones into beautiful diamonds. During the tour your experienced guide will tell you about the origins of diamonds, the 4C's of diamond valuation, the origin of diamonds and much more.
In a private room you will see part of the largest collection of unset diamonds and you will also see the Royal 201 diamond, This is Royal Coster's own patented diamond and known to be the best diamond in the world.

See the Koh-I-Noor, in the British Crown Jewels and some more of spectacular diamond artifacts.
Enjoy the jewelry collection at Royal Coster Diamonds!

Get your tickets


Royal Coster Diamonds invites you for a free guided tour in the heart of Amsterdam. Explore the mystical world of diamonds in your own language. Watch our craftsmen and women cutting and polishing the most beautiful diamonds and see our goldsmiths making our jewelry collection.


  • FREE tour available in 35 languages
  • See largest diamond collection in Europe
  • See the Royal 201 Patented Collection
  • Learn about diamond facts
  • See the Koh-I-Noor, in the British Crown Jewels
  • Tax free shopping

Opening hours