For European jewellery wholesalers, Antwerp is not just a famous diamond city. It is one of the most practical routes for importing, checking, documenting and moving diamonds through the European market. A retailer in Amsterdam, Düsseldorf, Paris, Milan or Madrid may never stand inside the Diamond Office itself, but the goods they buy are often shaped by the systems working there every day.

The Antwerp Diamond Office sits at the centre of this process. It is the only customs office in Belgium authorised to handle diamond imports and exports outside the EU, and it serves as a daily working point for Antwerp diamond traders handling goods for customers, laboratories, manufacturers and trade fairs. 

In 2026, this process matters even more because European diamond imports are no longer only about customs value, parcel description and secured shipping. Importers of in-scope polished natural diamonds must also provide a Due Diligence Statement on Diamond Origin from 1 January 2026, confirming that the goods are not of Russian origin and that reasonable steps have been taken to verify this. 

For European wholesalers and retailers, this makes Antwerp’s structured diamond import route valuable. It gives trade buyers a clearer path for paperwork, customs presentation, valuation, origin controls and chain-of-custody management. Dalila Diamonds helps European jewellery businesses source wholesale natural diamonds through Antwerp with documentation and supplier support built around today’s compliance needs.

Why Antwerp Still Matters for European Diamond Imports

Antwerp has remained important because its diamond infrastructure is built for trade. The city has specialist suppliers, secured couriers, grading links, bourses, customs familiarity and the Diamond Office system. For jewellery businesses, this reduces guesswork.

A retailer can buy diamonds from many places, but the quality of the import route matters. If the shipment is not documented correctly, the problem may appear later when the retailer needs to answer a customer, insurer, customs agent or buyer. Antwerp gives European trade buyers a route where paperwork, valuation and diamond-specific controls are part of the normal process.

Belgian government guidance states that declarations for relevant diamond goods must be made at the Diamond Office premises at Hoveniersstraat 22, 2018 Antwerp. It also notes that intra-EU shipments may be declared to the same service, although this is not mandatory. 

For buyers using Antwerp diamond sourcing, this is a major advantage. It means the supplier is working close to the trade systems that European diamond compliance depends on.

Step 1: Supplier and Buyer Confirm the Goods

The process begins before the parcel reaches customs. The buyer and supplier must agree on the goods being purchased or shipped. This includes the type of diamonds, carat weight, number of stones or parcels, value, certificate details, origin information where relevant, and whether the goods are rough, polished, returned stock, memo goods, lab submission goods or export goods.

For polished natural diamonds in 2026, this first step is especially important. The supplier should already know whether the shipment falls within the scope of the EU’s diamond origin requirements. If it does, the correct Due Diligence Statement must be prepared before or at the time of import.

The buyer should not wait until the parcel is already moving to ask for documents. A professional purchase should include the paperwork discussion at the start.

Step 2: Commercial Documents Are Prepared

Every shipment needs clear commercial documents. These usually include an invoice or pro-forma invoice, packing list, description of goods, carat weight, value, buyer and seller details, transport information and certificate references where available.

In 2026, polished diamond imports that fall within scope also need the Due Diligence Statement on Diamond Origin. AWDC’s polished diamond import guidance explains that importers must provide this statement either prior to or at importation and declare that the diamonds are not of Russian origin and that sufficient efforts were made to verify this. 

This is where many mistakes can happen. If an invoice is vague, if certificate numbers are missing, if origin wording is unclear, or if the shipment reference does not match the paperwork, the import process becomes harder.

For European retailers, the best habit is simple: make sure every diamond has documents before it becomes stock.

Step 3: Shipment Moves Through a Secured Route

Diamonds are high-value goods, so they should move through specialist secured channels. Many Antwerp trade shipments use professional diamond couriers and insured logistics providers. The aim is not only to move the goods safely, but also to preserve chain of custody.

Chain of custody means the business can show who handled the goods and how they moved. This matters for insurance, security and compliance. A diamond shipment should not be treated like ordinary retail stock. It needs controlled movement, correct declarations and secure delivery.

For retailers buying certified natural diamonds, the shipment route should match the value of the goods. Strong certificates and weak logistics do not belong together.

Step 4: Goods Are Presented to Diamond Office

When goods enter or leave Belgium through the diamond system, they are presented to Diamond Office. The Diamond Office is the central point where the relevant declarations, checks and customs formalities are handled.

The Belgian government confirms that declarations must be made at the Diamond Office premises on Hoveniersstraat. (FPS Economy) AWDC also describes the Diamond Office as the heart of Antwerp’s diamond district and the only Belgian customs office authorised for diamond imports and exports outside the EU. 

For buyers, this centralisation is useful because the process is specialised. Diamonds are not ordinary goods. Their value, size, grading, origin and documentation all need careful handling.

Step 5: Valuation and Document Checks Take Place

At the Diamond Office stage, the paperwork and goods are reviewed through the required procedure. This can involve checking the declared value, parcel details, documents and import or export information.

The aim is to ensure that the shipment matches the declaration. If the documents say one thing and the goods show another, problems can follow. That is why suppliers and buyers should prepare the file carefully before the shipment reaches the office.

In 2026, importers should also be ready for origin-related checks. AWDC reported that spot checks by FPS Economy are being used for polished diamond imports and that importers must be able to present a correctly completed and signed Due Diligence Statement supported by relevant documentary evidence showing a risk-based verification process. (AWDC)

This is why a retailer should not treat the Due Diligence Statement as a formality. It must be backed by documents and a real supplier process.

Step 6: The Due Diligence Statement Is Submitted Where Required

From 1 January 2026, the Due Diligence Statement is required for in-scope polished diamond imports. AWDC states that it must be added to the customs declaration and that the use of a digital traceability platform is not mandatory for the time being. 

For trade buyers, this is practical news. It means the key task is not uploading to a mandatory digital platform, but preparing the correct statement and supporting documentation. The importer must be able to show that reasonable efforts were made to verify declared origin.

This may include supplier declarations, Kimberley Process information where relevant, G7 or GF references, invoices, stock records and origin details. The exact file depends on the goods, but the principle is the same: the importer must be able to explain the origin basis.

Step 7: Goods Are Released and Enter Trade Stock

Once the shipment clears the necessary formalities, the goods can move into trade stock, onward shipment, grading submission or retail supply. This is where the retailer’s own record keeping becomes important.

The Diamond Office process does not replace internal stock discipline. A wholesaler or retailer should still record the invoice, certificate number, stock number, origin notes, shipment reference and any G7, GF or Due Diligence Statement information.

If a stone later goes into a bespoke ring, upgrade, resale, memo movement or diamond buyback service, the record should remain attached to the diamond.

A well-handled import is only useful if the documentation is preserved after the goods arrive.

Why This Route Helps European Retailers

Many European retailers do not want to manage complex customs processes themselves. They want reliable stones, clear documents, fair pricing and a supplier who understands trade requirements. Antwerp helps because it combines supply depth with a recognised diamond import system.

For retailers in the Netherlands, Germany, France, Italy, Spain and the wider EU, an Antwerp partner can simplify sourcing. Instead of buying from unclear channels, retailers can work with a supplier that understands customs paperwork, origin documentation, certificate handling and secured logistics.

This is especially useful for businesses offering custom diamond sourcing. Bespoke projects often involve specific shapes, qualities, budgets and deadlines. A supplier who can source the right stone and provide the right paperwork saves time and reduces risk.

Common Mistakes to Avoid

The first mistake is assuming that “Antwerp sourced” automatically means the origin record is complete. Antwerp is a strong sourcing route, but buyers must still ask for documents.

The second mistake is leaving paperwork until the shipment is ready to move. The documents should be prepared before the goods are dispatched.

The third mistake is treating the Due Diligence Statement as a box-ticking form. It should be supported by supplier evidence and risk-based checks.

The fourth mistake is failing to store the import record after the goods arrive. If the diamond later needs to be resold, exported or explained to a customer, the missing file can become a problem.

The fifth mistake is mixing newly documented stock with older unknown-origin goods. Retailers should keep traceable stock, legacy stock and buyback stock clearly separated.

How Retailers Should Store Diamond Office-Related Documents

A practical retailer record should include the supplier invoice, certificate, stock number, carat details, shipment reference, origin notes, Due Diligence Statement where applicable, and any G7 or GF references. If the diamond is part of a parcel, the parcel record should also be saved.

The best system is one folder or one digital stock file per stone or parcel. This makes it easier for staff to find information quickly.

Sales teams do not need to show every document to every customer. But if a customer asks where a diamond came from, the retailer should be able to answer confidently and retrieve the supporting file.

Why Antwerp Compliance Can Become a Sales Advantage

Customers are asking more questions about natural diamonds. They want to know whether the stone is certified, responsibly sourced, properly documented and suitable as a long-term purchase. A retailer who can speak clearly about Antwerp sourcing and documentation has a stronger story.

The best customer-facing language is simple:

“This natural diamond was sourced through Antwerp and supported by trade documentation, including origin checks where required.”

That sentence is easy to understand. It does not overclaim. It shows professionalism.

For European jewellers, this is the right balance. Customers do not need a customs lesson, but they do want confidence.

Conclusion

The Antwerp Diamond Office process remains one of the most important parts of Europe’s diamond trade infrastructure. It gives diamond importers and exporters a specialised route for customs declarations, valuation, documentation and trade control. In 2026, its role is even more important because polished diamond imports now require stronger origin due diligence and supporting documents.

For European jewellery wholesalers and retailers, the practical lesson is clear. Choose suppliers who understand the Diamond Office process. Prepare documents before shipments move. Keep invoices, certificates, origin notes and Due Diligence Statements together. Train staff to explain Antwerp sourcing accurately. Do not treat paperwork as an afterthought.

In a market where trust now depends on both beauty and documentation, is your diamond supply chain ready for the Antwerp standard?

FAQs

What is the Antwerp Diamond Office?

The Antwerp Diamond Office is the specialised customs office in Belgium authorised to handle diamond imports and exports outside the EU. It is located in Antwerp’s diamond district. 

Where is the Diamond Office located?

Belgian government guidance states that diamond declarations must be made at the Diamond Office premises at Hoveniersstraat 22, 2018 Antwerp. 

Why is Diamond Office important for European jewellers?

It provides a specialised and centralised route for diamond customs declarations, valuation, import and export procedures, helping Antwerp remain a trusted sourcing centre.

Do polished diamond imports need a Due Diligence Statement in 2026?

Yes. From 1 January 2026, importers of in-scope polished diamonds into the EU must add a Due Diligence Statement on Diamond Origin to their customs declaration. 

Is a digital traceability platform mandatory?

No. AWDC states that a mandatory digital traceability platform will not be introduced for the time being.

What documents are usually needed for diamond imports?

Typical documents include an invoice or pro-forma invoice, packing list, goods description, value, carat details, certificate references, transport documents and origin-related declarations where required.

Can intra-EU diamond shipments be declared at Diamond Office?

Belgian government guidance says intra-EU shipments may be declared to the Diamond Office, but this is not mandatory. 

What happens if the Due Diligence Statement is checked?

AWDC says importers must be able to present a correctly completed and signed statement, supported by relevant documentary evidence showing a risk-based verification process. 

Does Antwerp sourcing prove mining origin?

No. Antwerp sourcing shows the trade route or supplier location. Mining origin must be supported by separate documentation.

How can Dalila Diamonds help?

Dalila Diamonds helps European jewellery businesses source natural diamonds from Antwerp with wholesale supply, custom sourcing and documentation support for modern EU diamond trade requirements.