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种语言 - 适用于导游指导



免费wifi - 在整个设施



网上预定 - 查看你所有的约会



无障碍通道 - 设施是每个人都可以访问



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 gebruikt cookies en daarmee vergelijkbare technieken om het bezoek en het winkelen bij de GASSAN website voor jou nog makkelijker en persoonlijker te maken. Met deze cookies kunnen wij en derde partijen jouw internetgedrag binnen en mogelijk ook buiten onze website volgen.