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  • Lifetime free cleaning and polishing service

Diamond Factory Tour

Discover the oldest diamond polishing factory in the world, located at the heart of Museum Square. 

Highlights

  • A guided tour in your own language
  • Witness true craftsmanship up close
  • Replica of the Koh-i-Noor 
  • Introduction to the Royal 201 diamond
  • Tax-free shopping

Duration: 30 minutes 
Price: Free of charge

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Step into the world of Royal Coster Diamonds and explore the rich heritage of Amsterdam’s diamond tradition. Since 1840, we have crafted diamonds for royalty and celebrities. Now, it is your turn to witness the craftsmanship up close. 
 
During your visit, a dedicated diamond expert will guide you through the art of diamond valuation using the 4 C’s: Cut, Color, Clarity and Carat. Watch as our master polishers and goldsmiths transform rough stones into sparkling masterpieces, a craft passed down through generations. 
 
Admire the Royal 201, our signature cut and the most sparkling round cut natural diamond in the world, exclusively available at Royal Coster Diamonds. Marvel at the replica of the legendary Koh-i-Noor, repolished by our craftsmen for Queen Victoria. 

End your experience by browsing our extensive diamond collection and enjoy 16% tax-free shopping as a non-EU visitor.  

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Become part of a legacy of brilliance.