Rough Diamonds

Rough diamonds. The ugly duckling that precedes the swan.

Located in Antwerp, Taché’s rough diamond division manages sourcing, production, marketing, investment activity – everything associated with rough stones. 

Our rough diamonds, sourced all over the world, all make their way to Antwerp There, they receive strict quality control inspections and sorting. 

The rough diamonds we offer include everything from “Indian goods” (the trading term for low-end commercial products) to high-end sawables and crystals in a wide range of sizes, colours, and clarity. 


Institutional supply

Rock-solid relationships with the world’s best suppliers.

Long-term supply contracts assures our group to have a constant and very regular inflow of goods needed by our clients.

This is why we can commit to long-term supply contracts with our clients.


We’ll go to the ends of the earth to acquire rough diamonds. Quite literally.

Over the years we have developed a strong direct and indirect presence in most producing countries to have diversified sources of inflow of rough stones.

This allows us to offer, here, some very exceptional stones to our clients, and there, a very wide variety of diamond types.


A luxury product contributing to the welfare of society.

Industrial diamonds are valued mostly for their hardness and abrasive qualities which makes them the ideal material for cutting and grinding tools. In addition, they have superb thermal conductivity which makes them the ideal material for advanced specialist industrial and scientific uses.

Industrial diamonds are used in industries such as aeronautics, automotive, medical, printing and electronics, all of which manufacture products vital for everyday life.

The Industrial diamond sector was added in 2014 to Taché’s rough diamond offering. Taché’s preparing subsidiary, Taché-HSK, completed the strategic acquisition of L. M. Van Moppes & Sons Ltd (est.1893), a De Beers Industrial Sightholder, and leading distributor of industrial natural diamonds.

Preparing Service

Some rough diamonds are especially challenging to prepare. How fortunate that we love a challenge.

Taché offers its clients a preparing service through its Taché-HSK subsidiary. This service provides manufacturers with ready-to-polish stones derived from challenging types of rough diamonds and offers a bit of predictability in an uncertain world in terms of production yield and quality. So that we can reliably provide a high-quality product of this kind, we established a factory in Sri Lanka over a decade ago. Today, it features state-of-the-art technology and a workforce of more than 250 highly trained employees. 

Taché-HSK’s extensive experience, exacting standards, and growing clientele around the world make us the undisputed leader in this specialized field.