GASSAN Diamonds

GASSAN’s rich history

Amsterdam has been famous for its diamonds since the sixteenth century. Because of the 400 years of expertise and craftsmanship, it is no surprise - that Amsterdam is still seen as the trading centre of the diamond industry worldwide. The popular brilliant-cut with 57 facets was also developed in Amsterdam, which is why it is also known as the “Amsterdam-cut”.

GASSAN has played a pivotal role in Amsterdam’s diamond history. It was established by Samuel Gassan in 1945, just after the Second World War, as a business specialising in the import and export of raw and cut diamonds. Today GASSAN Diamonds is located in a beautifully restored diamond factory built in 1879. Here, visitors can view the diamond polishers at their craft, while multilingual guides explain how to turn rough diamonds into dazzling brilliants.

The perfect brilliant cut

For generations, the diamond cutters at GASSAN Diamonds in Amsterdam have been working to perfect the brilliant-cut. With the GASSAN 121 diamond, they have finally succeeded. The breathtaking GASSAN 121 is a cut with a total of 121 facets that produces an unrivaled, perfectly shimmering diamond.

More than diamonds

GASSAN is not only known as a dealer of diamonds but also as one of the market leaders in Haute Joaillerie and Haute Horlogerie. On the ground floor you will find an extensive jewelry collection and a special Rolex Boutique where you can find countless models of the exclusive Swiss brand. In addition to Rolex, GASSAN also sells other brands such as Jaeger-Le Coultre, IWC, Omega, Chopard, Longines, Messika and the GASSAN brands: GASSAN 121, Choices By DL and By GiGi.

Different ways to experience Amsterdam as the Diamond City 

Discover the history of diamond craftsmanship on the free Diamond Experience tour, where guides will lead you through the diamond factory and explain about carats, colors, clarity, cuts and the GASSAN 121. GASSAN also offers a VIP tour through the diamond factory and the in-house Rolex boutique which includes a glass of champagne, a goodie bag and the chance to chat with a certified Rolex watchmaker. Or take a seat behind the grinder yourself with the Diamond Polishing Experience, where you can apply the final facets to your own diamond!