Visit the oldest diamond polishing factory in the world and enjoy a free guided tour in your own language. Watch the craftsmen and -women cut and polish rough stones into beautiful diamonds. Your personal guide tells you everything you want to know about diamonds. For example about the origins, the 4 C's of diamond valuation, the Royal 201, and much more.
You receive all the information you need to know to make an informed decision when you want to purchase a loose diamond or diamond jewelry. With our extensive stock of over 20,000 pieces, we have something for every budget. Our guides are known for their professional and honest advice and our goldsmiths make custom designs in less than 30 minutes. Book your appointment for a (video) call or visit now.
Royal Coster Diamonds invites you for a free guided tour in the heart of Amsterdam. Explore the mystical world of diamonds in your own language. Watch our craftsmen and women cutting and polishing valuable gems and see our goldsmiths making our jewelry collection. Here you find the most beautiful diamonds and diamond jewelry
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.
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!
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.