Diamond Experience Tour


Book a tour

Discover all facets of diamond grinding and learn about the history of diamonds. Learn more about diamonds and admire the beautiful watches and jewelry of the world’s most exclusive brands. We also present our own unique, brilliant cut: the Gassan 121. Let yourself be enchanted by Gassan Diamonds!

The guided tour:

- takes about 40 minutes
- is given in more than 28+ languages ​
- can be taken between 9:00 and 17:00 
- is offered seven days a week
- is completely free

Pick a date & time To step 2 of 3 Book as a tour operator
Fill in your personal details To step 3 of 3

Thank you!

Thank you for your request. Your request will be processed by our team. We will get back to you as soon as we can.

Thanks again!


GASSAN Diamonds

Check your mail and:

Create an account, and use the code provided in the email we just sent to link your tour to the appointment. That way, you know exactly where to be, and when to be there. You can also cancel the tour this way, along with other benefits a GASSAN account brings to you.

Create an account
27 Languages - Available for tour guidance

27 Languages

Available for tour guidance

Free Wifi - Throughout the facility

Free Wifi

Throughout the facility

Book online - See all your appointments

Book online

See all your appointments

Wheelchair Accessible - Facility is accessible by everyone

Wheelchair Accessible

Facility is accessible by everyone

Diamond cutting

Discover the brilliant art of diamond grinding

Gassan Diamonds is an Amsterdam diamond manufacturer located at the former steam-powered diamond grinding factory on the Uilenburgergracht. In this monumental building we will gladly let you peek over the shoulders of our diamond grinders. A guide will give you an explanation of the diamond machining process.

The free guided tour of the grinding shop is a unique experience. At Gassan Diamonds you will experience what diamond grinding feels like and get a taste of over 425 years of craftsmanship and tradition.

Exclusive diamonds by GASSAN

Admire our special and exclusive diamonds

During your visit to Gassan Diamonds you will have the opportunity to view a variety of diamonds from our impressive range in our showrooms. Of course you will find the world-famous “Amsterdam Cut” and our own cut shape: the Gassan 121. We are the only diamond manufacturer in the world to cut diamonds with 121 facets. And of course you can find a jewel in our Boutique that our goldsmiths can put together for you within 30 minutes: ideal as a gift for yourself or someone you love.

Choices by DL

Discover Choices by DL

The fashionable jewellery collection Choices by DL is also being heralded.It is ‘a jewellery wardrobe in a box’. And for good reason: using a beautifully simple system, you can choose gold color preference and vary the stone colour you require, instantaneously.

Book a GASSAN free tour

Book your guided tour online

If you’d like to reserve a guided tour of our diamond polishing shop, we recommend that you make an online booking. That way you can be sure that a guide in your language is available to take you on the tour at the time you want.

Boek your tour

Amsterdam: City of Diamonds

Amsterdam has been known worldwide as the “City of Diamonds” for 425 years. It is not without reason that the brilliantly polished Amsterdam shape is called the “Amsterdam cut” throughout the world. If you come to Amsterdam, a visit to Gassan Diamonds’ historic diamond polishing facility is a must.

GASSAN Diamonds uses cookies and similar techniques to make visiting and shopping on the GASSAN website work. By using the website, you agree to the placing of these cookies. For placing third party cookies, which give us insight into the use of the website, we ask you to press 'I agree'. More about cookies.