Step inside the world’s oldest diamond polishing factory with Royal Coster Diamonds in Amsterdam. Discover the Royal 201 diamond, a Koh-i-Noor replica, and end your visit with a sparkling gift.
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Difficulty
easy
Duration
60 minutes
Fitness Level
Suitable for all fitness levels; mostly indoor walking on flat surfaces.
Wildlife
History
Royal Coster Diamonds has operated continuously since 1840, making it a rare living museum of traditional diamond polishing.
Conservation
The company emphasizes sustainable sourcing and ethical craftsmanship to minimize the environmental impact of diamond production.
Royal Coster Diamonds
Step inside the world’s oldest diamond polishing factory with Royal Coster Diamonds in Amsterdam. Discover the Royal 201 diamond, a Koh-i-Noor replica, and end your visit with a sparkling gift.
Royal Coster Diamonds is the world's oldest diamond polishing factory, located in Amsterdam, Noord-Holland. The business operates a museum, showroom and live workshops where visitors can observe master craftsmen polishing and setting diamonds. Royal Coster offers a range of guided experiences, from free factory tours to private, curated sessions like the Royal Engagement Experience and the Diamond Masterclass.
Visitors can view historically significant displays including a replica of the Koh-i-Noor and the Royal 201 cut, as well as an extensive collection of loose and unset diamonds. The Luxury Shopping Experience highlights a showroom with a reported 20,000 loose diamonds and options for custom design, while several tours include tax-free shopping for eligible purchases. Group and private formats are available, including short guided tours and multi-hour practical workshops taught by an experienced polisher.
Royal Coster’s combination of live demonstrations, a diamond museum and hands-on opportunities provides both educational value and direct access to diamond sales and bespoke design. The business emphasizes craftsmanship, transparency in diamond valuation, and a curated visitor experience. For travelers and buyers seeking a historically rooted insight into diamond polishing and design in Amsterdam, Royal Coster Diamonds offers credible tours, private consultations, and unique experiences that showcase centuries of diamond expertise.
Heritage
World's oldest
Historic diamond polishing factory
Location
Amsterdam, Noord-Holland
Located in Amsterdam
Diamond Stock
20,000 loose diamonds
Extensive loose and unset selection
Tours Offered
7 experiences
Guided tours, private workshops, shopping
Reserve a guided tour, engagement ring consultation, or masterclass and experience historic diamond craftsmanship in Amsterdam — spaces are limited.
Book in Advance
Slots fill quickly, especially during tourist season; reserve your private tour early to guarantee entry.
Allow 60 Minutes
The full experience lasts about an hour—plan accordingly to avoid rushing through the tour.
Wear Comfortable Shoes
Though largely indoors, you’ll walk through multiple rooms and factory floors, so comfortable footwear is recommended.
Bring Your Passport
Non-EU visitors can take advantage of tax-free shopping, but a passport is required for verification.
Comfortable Walking Shoes
Supports walking through indoor spaces and brief outdoor transfers.
Passport
Required for tax-free shopping eligibility for non-EU visitors.
Light Jacket
Useful for cooler or rainy weather when walking to the venue.
spring|fall|winter
Camera or Smartphone
Capture rare glimpses of exquisite diamonds and historic factory interiors.