A trading house backed by J WELL FRANCE
COMPTOIR HAUSSMANN is an offering from J WELL FRANCE, a French company founded in September 2012. A simplified joint-stock company with share capital of €200,000, registered with the Paris Trade and Companies Register under number 754 012 896.
50 rue de Miromesnil, 75008 Paris. Visits by appointment in Paris’s 8th arrondissement, Monday to Friday.
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The house
COMPTOIR HAUSSMANN is a Paris trader in lab-grown diamonds, working exclusively with jewellery professionals.
We source our stones directly from audited cutting workshops, then inspect them one by one in Paris: calibration, colour, clarity, symmetry. What fails that check does not ship. That selection work, invisible to your end client, is what makes the piece hold up in the window.
Selling a stone means taking part in a rare moment — an engagement, an anniversary, something handed down. We believe that moment deserves a stone whose origin is documented, whose price is explained and whose quality can be verified. That is what we mean by transparency.
Ethics & traceability
Stones created without mining, with documented production origin, along a short supply chain.
Gemmological rigour
Systematic sorting, calibration and inspection of every parcel. A doubtful stone never ships.
A close relationship
A dedicated contact who knows your business, replies within 24 working hours, in French and English.
An ethical choice, concrete facts
Zero mining
Stones created in a laboratory: no mine, no displaced communities, no disturbed land.
Resources preserved
Water use and footprint far below those of traditional extraction.
Full transparency
A clear, documented provenance — the opposite of the opacity that still surrounds parts of the mining supply chain.
Controlled pricing
Up to four times cheaper than an equivalent mined diamond: savings of up to 75%, depending on the stone’s characteristics.
Our story
Years in fine jewellery
COMPTOIR HAUSSMANN was born from the experience of French jewellery entrepreneurs, in daily contact with workshops, stones and shop windows.
A realisation
Lab-grown stones are transforming the global market, yet independent jewellers only reach them through costly, opaque intermediaries.
Founding the house
We built a direct supply chain: audited cutting workshops, quality control in France, a single margin — ours — and independent certificates.
Today
We supply jewellers, designers and manufacturers across Europe, from single stones to regular programmes, with the same rigour on every parcel.
Ready to see the stones?
Open your professional account and receive an initial selection tailored to your business, with photos, videos and certificates.
Request professional access