Last checked: September 2026 · Based on the official website
Gassan Diamonds combines diamond cutting, jewellery and watches in a historic diamond factory near Waterlooplein. On a tour you learn about the “four Cs” of diamonds (carat, colour, clarity and cut) and see how stones are cut and polished. The family business has been run by four generations since its founder Samuel Gassan, and is known for its own GASSAN 121 cut with 121 facets.
The showroom presents diamonds, jewellery and watch brands. Contact Gassan to book a visit or an appointment.
Opening hours, prices and services can change. Always check the official website before you visit. Spotted something out of date? Let us know.
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