




Available languages
45 minutes
Mobile ticket
Royal Coster Diamonds is the world's oldest still-operating diamond polishing factory (founded 1840), steps from the Rijksmuseum.
Guests see real craftsmen polishing real diamonds using techniques refined over 185 years.
The experience includes a private diamond presentation, a look at the Cullinan replica (largest gem-quality rough diamond ever found), and an introduction to the Royal 201 cut, the most brilliant diamond in the world, exclusive to Royal Coster.
The 4 C's are explained in person, with real stones, by guides in 15+ languages.
Royal Coster polishers recut the Koh-i-Noor for the British Crown Jewels in 1852.
For travelers who want real depth, this is Amsterdam's diamond experience.
Minimum age is 18 years
Over 45 minutes, you move through the experience at a natural pace. No rushing. Watch diamonds being polished live. You'll stand close enough to see the wheel spin and the stone take shape. The diamond experts explain what they're doing as they work, so you leave understanding what actually happens inside a cutting house. Learn the 4 C's properly: Cut, Color, Clarity, and Carat explained in a way that actually sticks. By the end, you'll be able to look at a diamond and know what you're looking at. Get up close with legendary stones. You'll see a replica of the Cullinan (3,106 carats, the largest gem-quality rough diamond ever found) and the Koh-i-Noor, repolished under commission from Queen Victoria. You'll also be introduced to the Royal 201, Royal Coster's exclusive cut and the most brilliant round-cut natural diamond in the world. Step into a private showroom. The experience ends with a personal diamond presentation, a chance to see and handle stones, ask questions, and take your time. No prior knowledge needed. The storytelling is engaging for first-timers and genuinely interesting for anyone who thought they already knew diamonds.
Learn about diamond origins and shapes
Introduction to the Royal 201 diamond
45 minute Diamond Experience
Private diamond presentation in a showroom
Does not include drinks
For a full refund, cancel at least 24 hours before the scheduled departure time.
2 reviews
Total reviews and rating from Viator & Tripadvisor
Operated by Royal Coster Diamonds