One price for every traveller: €19 per adult.
Child prices by age band are shown at checkout. Option texts and prices come from the operator's listing; prices checked on Viator on 22 October 2026.
98% of ratings with a star breakdown are 4★ or 5★: 48 of 49
Star breakdown of all 49 ratings
Reviews are shown as the platforms publish them and removed when they disappear there.
Ratings collected from Guidekin, Viator & Tripadvisor.
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.
The operator's own notes, grouped by topic. Nothing here is added by Guidekin.
For a full refund, cancel at least 24 hours before the scheduled departure time.
| Tour | Price | Duration | Rating | Group |
|---|---|---|---|---|
| This tour · #10 of 18 | €19 | 45 min | 4.9 (49) | private |
| Amsterdam Traditional Dutch Blue Tile Painting Workshop | €25 | 1h 30m | 4.93 (780) | shared |
| Amsterdam Food Tour of 10+ Local Classic Tastings in Jordaan Area | €97 | 3h | 4.94 (415) | shared |
| Amsterdam Traditional Dutch Syrup Waffle Making Workshop | €23 | 45 min | 4.91 (1892) | shared |
Ranked #10 of 18 in Dutch Workshops & Classes by Guidekin score (rating weighted by review volume). Prices here run from €6 to €170, median €26; typical length 1h 30m. 4 of 18 are private. Figures are live from the tour cards; the rubric is our handpicked set, not the whole market. Compare all 18 Dutch Workshops & Classes