Since the 16th century, the Netherlands has been a global hub for fine jewelry. I invite you to explore Europe’s oldest diamond factories—Gassan and Royal Coster Diamonds—to witness the renowned Amsterdam cut in action. I will break down how stones are evaluated so you understand exactly what determines their value. If you decide to take home a piece of jewelry, you can purchase it directly from the craftsmen at fair factory prices.

How diamonds are cut and crafted

Royal Coster Diamonds is the oldest operating diamond polishing factory in the world and essentially a living museum. The craftsmen here take pride in heritage pieces like the Koh-i-Noor diamond from Queen Mary’s crown. You will see firsthand how rough, unpolished diamonds are transformed into brilliant gems, and learn why some stones sparkle more intensely than others. If a specific diamond catches your eye, the jewelers can set it in a custom design within a few hours.

Buying diamonds and custom jewelry

Purchasing jewelry directly from the source—immediately after certification and without dealer markups—saves you around 30% on the retail price. I will also help you quickly process your Tax Free refund.

I will arrange a private viewing for us in a comfortable jeweler’s room. There, you will learn how to evaluate carats, clarity, and overall stone classification.

If the ready-made pieces in the outlet do not suit your taste, you can design your own:

You select the diamond you like;
You choose the desired shape and metal for the setting;
The master jewelers set the stone in a matter of hours.

You will have all the time you need to make the perfect choice.

Tour details
This is an Amsterdam private tour, meaning the factory visit is reserved exclusively for you and your group.
The visit lasts 2.5 hours and costs 160 euros.
I keep the itinerary flexible, tailoring the experience to your preferences and focusing on the aspects of jewelry making that interest you most.