One of the oldest diamond factories in Amsterdam

Coster Diamonds was founded in 1840. Thousands of visitors come to admire the exquisite sparkling gems on display in the showroom. The process of preparing diamonds and the history of the diamond factory are explained in 25 different languages as you follow the guided tour through the factory.

The tour is free and afterwards you are invited to browse the spacious showroom. Coster Diamonds claim to fame is that they had the privilege in 1852 of re-polishing the Koh-i-Noor diamond, which is one of the British crown jewels.