Every guest receives a glass of champagne. In each glass, we have placed a real diamond or a cubic zircon (an imitation diamond). Nobody can see the difference between a real diamond and the zirconia. That's why we have one of our master polishers with a diamond loupe to check each stone. He or she determines which stones are imitations and which are real. Of course, only a few (or one) of the stones are real diamonds. But the guests can also keep the zirconia as a beautiful memento of the entire evening. While the diamond polisher checks the diamond, he or she explains a bit about the process of recognizing a real or a fake diamond. If people have questions about their own jewelry, they will be answered in a discreet and fun manner.
This event can be held at our premises or any other venue of your choosing. At our premises the costs will be:
Glass champagne € 5,00 per glass
Cubic zircons € 2,50 per piece
Diamond 0,10 crt € 180,00 per piece
Diamond 0,25 crt € 500,00 per piece
Language tour upon availability.
Duration and cost on location is upon request, please fill in the form below for a personalized offer.
The Champagne Surprise Tour is something we get asked for a lot at Royal Coster Diamonds by companies or exclusive parties such as galas and special events. It’s a fun and informative experience and one of the guests goes home with a real diamond.
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!
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.
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.