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Unlock the secrets of the diamond trade
Learn. Trade. Succeed.
Discover the real mechanisms of the diamond trade: sourcing, valuation, negotiation, ethics, and international markets.
Are you ready to step into the dazzling world of diamonds?
A training program designed in Antwerp, the world’s diamond capital, for those who want to understand and master this unique industry.
At the Antwerp Diamond Business Academy, we offer an exclusive and practical program, delivered in the heart of the Antwerp diamond exchange.
Our training is designed to impart essential diamond trading and valuation skills, directly linked to the realities of the market.
Through a concrete and practical approach, participants gain an in-depth understanding of trading mechanisms, quality criteria, and the professional standards of the diamond industry.
Who is the program for?
Students who have completed gemology training and wish to complement their theoretical knowledge with practical experience in the real diamond market. – For recent graduates seeking a practical understanding of diamond trading and valuation in a professional setting.
For jewelry houses, luxury brands, and jewelers wishing to train their staff in the language of diamonds, thereby enhancing their confidence, precision, and impact in storytelling with clients.
For jewelry industry professionals looking to deepen their business skills and qualitative understanding of diamonds.
For diamond enthusiasts and connoisseurs seeking an immersive and unforgettable experience at the heart of the diamond industry.
Curious Learners – Understand how diamonds are valued, bought, and sold around the world.
Led by industry veteran Henri Keesje, our academy is based in the heart of the Antwerp Diamond District, giving you direct exposure to the world’s leading trading hub. Our mission is to provide practical, in-depth training to students, sales professionals, and entrepreneurs alike.
Ready to Enter the Trade?
Discover how diamonds are evaluated, bought, and sold — not in theory, but in real-world markets. At the Antwerp Diamond Business Academy, we don’t just teach diamonds. We live the trade.
What we do
Become a Professional Diamond Trader Today
by Contacting Us
We offer the first diamond trading program of its kind in the heart of the Antwerp diamond district. Educate yourself in the trade and build your confidence in buying and selling skills. Our courses are designed to empower future diamond traders, jewelers, designers, and anyone passionate about the industry.
What You’ll Learn:
✅ Diamond Grading & Appraisal
✅ Trading & Price Evaluation
✅ Sales Strategies & Client Communication
✅ Understanding the Global Diamond Market
✅ Building a Career in the Diamond Industry
What we do
Educate yourself by the trade. Build up your confidence in buying and selling skills.
Knowledge is power!
Happy Students
What our students say
I took a two-week training course with Henri at Adba.I’m so glad I specifically chose him for this course because he has a wealth of knowledge about the diamond world. His clear and honest explanations, exercises, and patience have made me confident about my future jewelry project. I highly recommend taking a course with Adba because you honestly won’t find
Mrs Haja
- Brussels, Belgium
Henry and I spent two productive weeks together, during which we explored every aspect of the diamond industry. Henry is a true professor of diamonds, and I consider it a privilege to have learned from him and to have received his knowledge.
Michael
- Slovenia
Interning at the Diamond Bourse in Antwerp under Henri Keesje was an absolute game-changer! Henri’s guidance and expertise in the diamond trade opened my eyes to a world of opportunities. From learning the intricacies of diamond evaluation to navigating global markets, every day was a new adventure. The hands-on experience and mentorship I received were invaluable in shaping my career
Musi G
- Belgium - Israel
Après avoir étudié la gemmologie à Anvers, jai pu entrer dans le monde réel des diamants grâce à Henri. De l’approche des pierres à la négociation des prix , j’ai appris avec intensité et joie les ficelles du métier. Au sein même de la bourse d’Anvers , l’expérience était très enrichissante et pleine d’enjeux !
Jordan M
- Paris-Marseille, France
Henri Keesje has 20 years experience in forming and training people for the diamond trade and jewelry business. He has developed a unique way of teaching and compiling information to be used by his student for their future career.
Henri Keesje
- Antwerp, Belgium
Get In Touch
Hovenierstraat 51, 2018 Antwerp, Belgium