Where we belong — and the rules we work to.
Eight years in the Antwerp Diamond District, two doors from the Bourse. The institutions below are how we prove our work isn't a brand exercise.
The bodies we answer to.
Antwerp World Diamond Centre
Registered diamond trader since 2018. Every stone passing through our atelier with a weight ≥0.30 ct is logged against an AWDC reference; the paperwork goes to the customer with the finished piece.
Kimberley Process Certification
Every rough or polished diamond enters the EU under a Kimberley Process certificate — the international scheme that excludes conflict diamonds. We retain the import documentation for 7 years per EU regulation 2018/2003.
Responsible Jewellery Council — pending
RJC accreditation in progress (audit scheduled Q3 2026). Our suppliers — Ajediam, GD Paris, the Antwerp casting house we partner with — are already RJC members, so the upstream chain is covered today.
Registered Belgian VAT — BE 0698 934 191
OnlyJewels BV trades as Antwerp Ateliers. Full Belgian company registration; intra-EU and export VAT documentation handled in-house. Every invoice is fiscally valid in your country.
Belgian + EU hallmarking
All gold and platinum pieces are hallmarked per Belgian standards — alloy fineness, our maker's mark, and the assay-office stamp. The hallmark survives polishing and is the legal proof of metal content.
GIA-graded stones on request
Diamonds above 0.50 ct ship with a GIA grading report by default; smaller stones on request. We never re-grade or re-label a certificate — the report number on the laser inscription matches the paper.
In the press.
An atelier our size doesn't court coverage — when it lands, we list it here so you can verify what we say about ourselves matches what others say about us. Last reviewed May 2026.
- No press features to list right now. We don't fabricate coverage — when something real is published, it appears here within a week.
Hoveniersstraat 19 — two doors from the Diamantbeurs.
The address is verifiable: walk down Hoveniersstraat from the Antwerp Diamond Bourse and we're on the right. Tuesday to Friday 10:00–18:00, Saturday by appointment. Book a visit →