Royal Coster Diamonds is the oldest diamond polishing factory in the world. Since 1840 Royals from all over the world came to Amsterdam to witness our craftsmanship. We’ve welcomed visitors like Empress Sisi, the Viceroy of China, King Rama V, Prince Napoleon and many more.
Today this Royal experience is within your reach. Visit our four monumental 17th century villa's and see how we create beauty that lasts for centuries. We give private guided tours during which we tell you about the history of precious stones and how Amsterdam became the City of Diamonds. You dive into our rich legacy that is filled with Royal Stories. Your guide explains how diamonds are created and polished while you see our polishers and goldsmiths up close. You can take a picture of yourself behind a real diamond polishing table and at the end of the tour, you receive a *sparkling* goody bag..
