We build strong
relationships

Why Windiam
Why Windiam

Why Windiam

Our mission is to
“Use our responsible sourcing practices, manufacturing skills, and niche expertise to build strong client relationships and help them achieve their full business potential.”

We source and deliver an extensive selection of polished goods both to the world’s leading brands and jewellery chains, as well as smaller boutique shops.

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Polished
Polished

Polished

We deliver your perfect polished stone on time and at the right price.
From in-house sorting to express delivery, we use our global network to negotiate the most competitive prices for you.

From this, we command a reliable reputation, as a trusted partner with a flawless record.

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Staying One Step Ahead
Staying One Step Ahead

Staying One Step Ahead

We work daily with state of the art technology

Meet the M-Screen
A precise, automated melee device that screens round brilliant diamonds from 1.0 millimeter till 20 points for possible lab grown ones, or potential HPHT colour enhancement and simulants.

The technology eliminates the risk of receiving compromised goods.

Optec Industries
This French company have developed an automated optical dimensional control system for round melees diamonds. With its precise cut quality control, it delivers on your specific measurements.

As a preferred partner for many luxury watches and jewellery houses, we save you time and money by:

  • Assorting your goods; every stone you receive from us is precisely as per specification
  • Avoiding return shipments of rejected stones

Both machines have been in operation since 2016 at our Antwerp headquarters. Alongside our in-house sorting team, these investments help optimise your search for the perfect diamonds.

Ask us more or arrange a tour of our technology by calling our Antwerp head office here.

Rough
Rough

Rough

Buying rough diamonds from a trustworthy company is essential to ensure you get the right stones, at the right price.

We help you buy what you need.

If you’re looking to sell, our valuation specialists will ensure appraisal of your stones with absolute integrity.

We pride ourselves in guiding you through today’s global market confidently.

You can count on us to serve as your trusted advisor from valuation through to sale.

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Locations
Locations
Contact
Contact