My tour was amazing! Loved the care and experience given to us by Van Dang! She is great and very knowledgeable. Funny too lol. Request her if you are visiting, you won’t regret it!





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.
In demand: 210 of the next 450 departures are already sold out.
From the operator’s live schedule on Viator, checked Oct 13.
Reviews collected by Viator and Tripadvisor
Excurgo comparison of 2,107 Viator tours, recalculated daily.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Amsterdam: Diamond Experience at Oldest Diamond Factory lasts about 45 min.
Prices start at $22 per person for this Amsterdam experience, booked through Viator with the price shown before checkout. There is 1 booking option, so the final price depends on the option you choose.
According to the operator’s current schedule, it runs every day, with 15 departures a day between 9:00 AM and 4:00 PM.
Children aged 3–17 pay nothing, adults from $22.
It can: 210 of the next 450 departures are already sold out, so booking ahead is a good idea.
Yes. Cancel at least 1 day before the start for a full refund. Later cancellations are non-refundable.
The experience is available in AR, VI, PT, CMN, YUE, EN, IT, FR, NL, TR, ES.
It is a private experience: only your party takes part. Up to 15 travellers can book together.
Infants and small children can ride in a pram or stroller Children under 17 go free. The building has stairs. Strollers can stay at reception during the visit. Our team can also help carry the stroller up and down the stairs if needed.
Yes, bookings are confirmed instantly.
Travellers rate it 4.9 out of 5 across 46 reviews on Viator and Tripadvisor; it is run by Royal Coster Diamonds.
Reviews collected by Viator and Tripadvisor
My tour was amazing! Loved the care and experience given to us by Van Dang! She is great and very knowledgeable. Funny too lol. Request her if you are visiting, you won’t regret it!
Clare was a fountain of information about Van Gogh, providing colorful explanations of his life and artwork.
Amazing experience and very informative! Angela was very helpful and really made the experience.
Wonderfully informative and educational. Beautiful facility.
Pauline & Fabian were absolutely amazing & so helpful. Make out so enjoyable & informative. Thank you!
My husband and I signed up for the Diamond Experience tour while we were in Amsterdam. It far exceeded our expectations and we learned quite a bit. We met the diamond polisher who holds the Guinness Book of Records for the smallest faceted diamond. We also received an insightful education about faceted diamonds and the difference between natural and lab-grown diamonds. Our tour guide, Anas, couldn't have been more generous with his time and answered the multitude of questions we had. He was an outstanding representative for Royal Coster Diamonds.
Anas, thank you, that is really kind and we learned a lot of things.
The guided tour was very informative. Patricia was very knowledgeable, pleasant and very patient.
The tour was a good adittion to the experience
We have done diamond tours in the past but the Royal Coster Experience was by far the best! The attention given to us by Angela was so personal and the knowledge she has for their beautiful stones and the deep company history was amazing. We were so impressed that we bought 2 stones and my new heirloom ring looks fantastic!!
| Tour | Duration | Rating | Price | |
|---|---|---|---|---|
Amsterdam: Diamond Experience at Oldest Diamond Factory | 45 min | 4.9 (46) | $22 | |
Amsterdam Gassan Diamond Factory Tour with Champagne | 45 min–1h 10min | — | $18 | View |
Private tour in Amsterdam incl. a visit to Gassan Diamond factory | 3 hours | — | $202 | View |
Amsterdam: Diamond Museum Highlights & Guided Factory Tour | 45 min–1h | 3.7 (86) | $10 | View |
Amsterdam Treasure Mystery: The Sailor's Lost Diamonds | 1h 30min–2h | 4.8 (41) | $6 | View |
Operation 45: An Adventure in Diamonds | 2 hours | 4.9 (38) | $29 | View |
Amsterdam: Royal Experience at Oldest Diamond Factory | 1 hour | 4.4 (91) | $34 | View |