Rooted in Antwerp.
Built on trust.
Shay — Private Diamond Jeweller
My name is Shay. I've spent over 30 years immersed in Antwerp's diamond industry — first learning the trade from within a family business that has operated here for generations, then establishing TennisDiamonds as a private service for clients who want direct access to exceptional diamonds without the retail markup.
Antwerp is the centre of the global diamond trade. More than 85% of the world's rough diamonds pass through this city. Working here — with real relationships to cutters, polishers, and wholesalers — gives me access that no retail jeweller can match. I pass that access directly to my clients.
What I offer is not just a product. It's knowledge, discretion, and a genuine interest in getting it right. Every client I work with is different. Every piece I create reflects that.
Our values.
Natural Diamonds Only
We believe in the real thing. Natural diamonds carry geological history, genuine scarcity, and enduring value. We work exclusively with natural stones and will never suggest otherwise.
Complete Transparency
We explain everything. The four Cs, the trade-offs, the difference between a D and an F colour in real light. Our clients leave every conversation more informed — never confused.
No Pressure, Ever
We don't work on commission. We don't have sales targets. We have a simple goal: to help you make the right decision, at the right time, with complete confidence.
Absolute Discretion
A private jeweller operates quietly. We do not publicise client names, transactions, or purchases. What you buy and who you are remains entirely between us.
The diamond
capital of the world.
More than 85% of the world's rough diamonds — and 50% of all polished diamonds — pass through Antwerp. The city's diamond quarter has been the global centre of the trade since the 15th century.
Being based here is not a marketing point. It is a genuine advantage. It means direct relationships with the people who cut and polish the stones. It means access to inventory that retail jewellers never see. It means Antwerp pricing — not retail pricing.
Let's have a conversation.
Whether you know exactly what you want or have no idea where to begin — I'm here to help.