Royal Coster Diamonds

Royal Coster Diamonds is world's oldest, still operating, diamond polishing company. Founded in 1840. 

About 350.000 visitors a year come to see our master diamond polishers and goldsmiths create the most stunning jewelry. During free-guided tours you will see historical treasures such as the Koh-I-Nor as well as our own diamond cut 'the Royal 201': A diamond with no less then 201 facets, creating the most spectacular sparkling effect you have ever seen. In addition you will witness our craftsmen showing you the process of cutting and polishing a diamond from a rough stone to a perfectly crafted diamond. A brilliant experience which you will not forget soon. 

After the free tour, we will also show you our exclusive and extensive collection of loose and set diamonds and the most amazing, custom made jewelry available in the world.