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Royal Coster Diamonds
With nearly 200 years of experience, we are experts in diamond cutting. We have created jewelry for Prince Napoleon, for Empress Sisi and in 1852, the craftsmen of Royal Coster were chosen by Queen Victoria to re-polish the largest diamond in the world; the Koh-I-Noor. Located on the Museumplein in Amsterdam, we are at your service for diamond jewelry, high-end watches, tours and workshops.
COSTER SIGNATURE COLLECTIONS
Explore our signature collections and immerse yourself in the celebration of true craftsmanship.
Our designs are meticulously crafted at our flagship diamond factory in Amsterdam.
Royal 201 Signature C Collection
Discover the 201 facets
Tennis Collection
Timeless, elegant and beautiful
Rainbow Collection
All the colors of the rainbow are the foundation of our unique Rainbow Collection
Luna Collection
Your Moonlight Sparkle
Engagement Collection
Our best selling watch collections
Our watch boutique has the best brands in Haute Horlogerie.
discover coster
Tours in Amsterdam
Design your own ring
Send a sketch of your own design and let our goldsmiths fulfill your wish
Share our knowledge
Learn more about the magic of diamonds
Amsterdam; City of Diamonds
How did Amsterdam become the City of Diamonds? Amsterdam has been the City of Diamonds for more than 400 years. The story of how Amsterdam became the diamond capital of...
Brief History of Diamonds
In the hectic days of constant rushing around, the little sparkle of a diamond helps you pause for a second and forget about the worries of the world. Take that...
Visit Royal Coster
Book An Experience And Learn About Our Heritage Or Visit Us To See More Diamonds & Jewelry