Antwerp Diamond Factory

The Boutique Atelier in Antwerp
S. Muller & Sons operates as a boutique diamond manufacturer and we polish all our diamonds in the heart of Antwerp’s historic Diamond District. Our atelier hosts the city’s most experienced Master Cutters and for over 70 years, our company has built a global reputation for polishing Hearts & Arrows diamonds.
We welcome visitors to our factory from all corners of the world, showcasing Antwerp’s heritage and craftsmanship.
Sourcing and Precision
First, we source conflict-free rough diamonds from local bourses and auctions. Then, our experts map and plan every stone according to strict guidelines. We polish each Hearts & Arrows diamond with total precision. In fact, we never cut corners during the process – even our commercial cuts lack naturals or extra facets. Instead, we use a specific number of girdle facets to maximize beauty.
Our diamonds are made by hand, with utmost care, with the goal of maximizing the light reflection of every stone we polish.


Transparency You Can Trust
As a result, you know the exact history of your purchase and you understand where the rough stone originated and who polished it. Furthermore, we proudly offer Certificates of Origin upon request, documents providing extensive information about every diamond we polish.
We proudly feature in AWDC’s directory of diamond factories operating in Antwerp.
Additionally, you can request a personal visit to our factory atelier by simply sending us a contact form, and we will get in touch with you. We invite you to learn more about our factory’s history and our special EightStar diamond.
