Visit Gassan Diamonds for free

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Free Gassan Diamonds Tour

During the Hop on – Hop off tour you’ll get the chance to hop off at Gassan Diamonds. Here you can join a completely free tour of Gassan Diamonds Amsterdam. This diamond factory will give you a good idea of diamonds in Amsterdam and their history in the city. During the tour, you will discover all facets of diamond grinding and cutting, including the Amsterdam Cut and Gassans own unique cut: the Gassan 121. See how a rough diamond is cut into a shining gem, learn about the different qualities of diamonds and see how you determine the value of a diamond. You’ll be able to admire and buy beautiful watches and jewelry from Amsterdam and all over the world at the end of the tour.

Diamond Factory Amsterdam

Right after World War II, in October 1945 Samuel Gassan started the factory in the city center of Amsterdam. His company was a wholesaler and retailer in one. Importing and exporting rough and cut diamonds. Because of the growth of the company they moved around in Amsterdam quite a lot. Now, Gassan Amsterdam is established at the Nieuwe Uilenburgstraat in Amsterdam. The building was a former steam-powered diamond grinding factory. Behind the building is a quay for the Hop on – Hop off boats (green line, stop 3) and in front of the building is a bus stop (stop 4) for the Hop on – Hop off buses.

Enjoy the tour

Amsterdam has been known as the city of diamonds for over 435 years. See the history with your own eyes and learn more about this Amsterdam diamond factory during this unique tour. The tour is available in more than 28 languages. Every day of the week between 09.00 and 17.00 tours will take place starting at the entrance of the factory. The tour will take 40 minutes and is completely free. Don’t miss out on this fantastic opportunity!

  • See all the best highlights in Amsterdam
  • Ticket valid for 24/48 h.
  • GPS Audio Guide in 18 languages
  • Panoramic roof for the best view
  • Free WiFi available on all buses and boats
  • Free Mobile app available
  • Free City map included
  • Discount tickets for museums and attractions available


City Sightseeing Amsterdam will save you time and money during your stay in Amsterdam. Choose between a 24- or a 48 hour ticket and see all the best highlights in Amsterdam. You can hop on and off the buses and boats at every stop. The GPS audio guide on board is available in 18 languages and free Wi-Fi is included on all buses and boats. Download the free app and get a live view of what the routes of the buses and boats are, so you can reduce waiting times to a minimum. Get your tickets now and enjoy your holidays in Amsterdam to the fullest!


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