Diamonds can be bought at any jeweler around the world. So why is Royal Coster Diamonds the most renowned diamond supplier for Royal families around the world for more than 178 years? We believe the reason for this is a combination of unparallelled craftsmanship and trust.
With our new Royal Experience we offer a new tour where you learn even more about our rich heritage.
Learn why Queen Victoria, Empress Sisi and King Rama V of Siam not only trusted us with their diamonds but took the time to travel all the way to Amsterdam to witness with their own eyes how we crafted the most sparkling diamond jewelry.
Our guided diamond factory tour is completely free of charge. We give free guided tours in more than 35 languages. Get your ticket today and discover the magical world of diamonds!
Our engagement workshop is for couples who are preparing for an engagement or anniversary and want to learn more about diamonds before they purchase. Make buying your engagement ring an unforgettable experience.
This Masterclass Deluxe is given exclusively by our best diamond polishers. They give you an in-depth Masterclass that ends – if you do it correctly – with an official certificate.
Experience diamonds like Royals do. Royal Coster Diamonds is the oldest diamond polishing factory in the world. Since our establishment in 1840, Royals from all over the world came to Amsterdam to see our impressive craftsmanship.
If you are looking for a sparkling exciting addition to any event; the Champagne Surprise is perfect for you. Every guest gets a glass of champagne with a little sparkling stone inside. But is it a real diamond or a fake one?
Our diamond polishers will check each stone closely with a diamond loupe and reveal who is the lucky winner.
The fascinating world of diamonds presented by Royal Coster. Products, tours and news. We won't spam your inbox.