Natural diamonds are our singular passion.
At Diamond Trading NV we are focused on the trade of rough diamonds and the manufacturing and distribution of polished diamonds. Our clients and partners benefit from our vision, knowledge and expertise.
We are a family-owned business based in Antwerp, with over 150 years of experience and an uninterrupted presence in the diamond trade since 1875.
We unite the inherent beauty of natural diamonds with the unique desires of our consumers.
Every person and every natural diamond is unique. We aim to distil the soul of the rough into its most fitting faceted shape, on its journey to the final wearer.
Nature's most precious resource, with a personal touch.
As specialists in rough and polished diamonds, we trade with respect for their natural beauty and rarity. We aim to enhance value by bringing out the natural qualities of each stone.
It is our fundamental approach, driven by professionalism, open-mindedness and passion.
We welcome your questions. Please get in touch.
Contact usRough and polished diamond trading.
We are Diamond Trading NV, a leader in the trade and distribution of rough and polished diamonds. We serve our clients with our broad expertise and deep market knowledge, gained through our position in the value chain and over 150 years of experience.
We are located in the diamond centre of Antwerp, Belgium. Our global network stretches from Africa to Europe, and from India to the US and China, covering all the major diamond cutting and trading centres.
We balance our daily activities with our long-term strategy, working with suppliers, manufacturers and jewellers around the world.
Our two executive directors represent the firm's professional, hands-on approach on a daily basis.
The strength of relationships rests on trust, loyalty and understanding.
We operate with a business model that revolves around these foundational values, with our suppliers, clients, colleagues and partners alike. We believe long-term success comes from nurturing these relationships through openness and the transparent exchange of information.
At Diamond Trading NV, we provide tailor-made solutions for our clients. We bring value to our relationships, both upstream and downstream.
Our expertise begins with reading the rough: understanding the potential of each stone, and anticipating the polished gem which it can become. That same insight now guides our trade in polished diamonds, from sourcing to the finished stone.
Successful outcomes are realised when the right product is presented to the right customer at the right time. We strive to support the success of our partners.
Sharing our know-how.
We share our knowledge of rough and polished diamonds with our partners, giving them clear market and industry insight.
We source directly from mining companies and artisanal producers, and sell to the most efficient and reputable manufacturers.
We work closely with our polishing partners, offering guidance throughout the planning and design process.
The strength of our business lies in the trust of our relationships, our knowledge and our reputation.
Our diamonds, in their natural character.
The 888.88 Infinity
A rough promise
Infinity
It's black, it's bold, it weighs 888.88 carats, and its name is Infinity.
A fancy black natural diamond from the Democratic Republic of the Congo, Infinity was shaped from a single rough crystal of 1,138 carats. It was cut with respect for its natural size and shape, minimising the loss of its rough promise.
Traces of a dramatic ascent, kept intact.
On its volcanic journey from some 150 kilometres beneath the Earth's surface, Infinity developed a patina and an inner landscape that bear the marks of immense pressure and tension.
Rather than polish these away, they were preserved: every vein ripples beneath the facets.
“We did not try to erase the traces of this very dramatic and fast transit from deep in the earth.”Daniel De Belder
Half a century until its final shape.
Acquired as a rough crystal in 1975, Infinity was recorded by the GIA in 2013 as the largest single-crystal natural diamond it had examined and reported on at the time.
Between 2022 and 2024, it was finally cut and polished, with custom-made tools, for a stone that had long been considered too hard to shape.
Perfection that praises the shadows and sees the light in the dark.
The full story of Infinity is best experienced on a one-to-one basis.
For enquiries and viewing requests, please contact us.
Restoring forests, conserving biodiversity.
Diamond Trading NV is concerned about global warming and is keen to see efforts in reforestation and conservation of biodiversity increase in the world, to ensure the survival and balance of our fragile ecosystems.
That's why we decided to sponsor My Forest Armenia from the very beginning in 2019.
Daniel De Belder, executive director of Diamond Trading NV, is also a botanist and is passionate about dendrology.
His parents, Robert De Belder and Jelena Kovacic, were renowned botanists and authors of many scientific books. Robert De Belder founded the International Dendrology Society in 1952. Daniel is the co-founder of the Arboretum in Kalmthout, Belgium, and is an ambassador of My Forest Armenia.
Our commitment to social responsibility is priority number one.
Diamond Trading NV is committed to operating its business with the highest ethical standards, while ensuring the integrity and transparency of its services. This daily dedication is our most important priority.
We are transparent about our social, environmental, ethical and economic responsibilities, and we value our membership and adherence to organisations which promote social responsibility.
In line with RJC Standards on reporting and disclosure, the following documents are made publicly available:
- RJC Policy and Commitment PDF
- Human Rights Policy PDF
- Supply Chain Policy PDF
- Annual Supply Chain Due Diligence Report PDF
- Annual Sustainability Report PDF
To learn more about our sustainability efforts and performance, the policies against which we have been independently audited, or to raise a grievance, please email kathleen@diamondtradingnv.com.
Responsible Jewellery Council
We are proud members of the RJC, a nonprofit organisation that sets industry standards throughout the supply and retail chain.
Kimberley Process
We strictly adhere to the Kimberley Process Certification Scheme (KPCS), an international certification system backed by the United Nations that aims to prevent conflict diamonds from entering the market.
World Diamond Council
We closely follow the World Diamond Council's voluntary System of Warranties, which requires a printed affirmation that diamonds have been purchased through authorised sources.
Our business is built upon a shared Statement of Principles that we use to guide our business ethics, social impact, environmental performance and management systems.
In accordance with applicable laws, these principles outline our guiding values, including our belief in the dignity of the individual and in the United Nations' Universal Declaration of Human Rights.
We refuse to engage in bribery or corruption and do not tolerate the use of child labour. We aim to uphold the highest standards of health and safety and set firm anti-discrimination policies. Our standards extend to our commitment to minimise our environmental footprint.
We set strict business conduct policies and share these practices with our employees and partners. To learn more about our policies and commitments, or to receive a printed copy, please contact us.
We welcome your questions.
Write us
- Address
- Diamond Trading NV
Pelikaanstraat 62
2018 Antwerpen, Belgium
View on map - Telephone
- +32 (0)3 234 32 01
