In the world of precious stones, trust takes the form of a document. A certificate is not a decorative addition to jewellery but a record of facts: who examined the stone, what they established and what they take responsibility for. That is why every BELLER piece leaves our atelier with a complete set of documents, and the parameters of our diamonds are confirmed by independent laboratories.
We believe true luxury begins with clarity. BELLER clients never have to take our word for it: they can read, verify and compare. This is what separates investment jewellery from a beautiful object with no history.
Every BELLER piece comes with our own certificate of authenticity. The stone descriptions are prepared by a gemmologist: you will find the type and origin of the stone, its weight, colour and clarity, along with details of the precious metal used for the setting. We sign the document as its makers, taking responsibility for every parameter, and our descriptions follow the standards of CIBJO, the international jewellery confederation.
BELLER's responsibility is also confirmed by our maker's mark: a hallmark registered with the Assay Office and assigned exclusively to our atelier. We place it on every piece that leaves our workshop. Permanently struck into the metal, it remains an unambiguous sign of origin and authorship.
Next to the maker's mark sits the assay mark, applied by the Assay Office after the piece has been examined. It is an independent, state confirmation of the actual gold content of the alloy, governed by hallmarking law. We do not apply this mark ourselves - it is an official confirmation of the fineness of the metal used in the jewellery.
For diamonds we work with reports from the independent GIA and HRD Antwerp institutes, and we select our centre stones in D-E colour and VVS1 clarity. The BELLER certificate brings all this data together in one clear document that stays with you forever.
The Gemological Institute of America gave the world a common language for talking about diamonds: the 4C scale, grading Carat, Color, Clarity and Cut. GIA laboratories operate independently of sellers, which makes a GIA report a document, not a declaration.
Every report carries a number that can be verified in the online GIA Report Check database. When you buy a GIA-certified diamond at BELLER, you receive a stone described to the most recognised standard in the world.
HRD Antwerp was founded in Antwerp, the city through which the heart of the world diamond trade has passed for centuries. It is Europe's certification authority: the laboratory grades stones according to the rules of the International Diamond Council and educates gemmologists who work across the industry.
Like a GIA report, an HRD Antwerp report can be verified by its number in the institute's database. For clients who value the European jewellery tradition, it is a document of particular weight.
Every BELLER piece carries the maker's mark of our house: our symbol, the sign of the maker that links the document to the object. It is a jeweller's tradition older than any laboratory, the atelier's signature set in the precious metal itself.
Together, the maker's mark and the certificate of authenticity form a whole: the document describes the stone and the metal, and the mark in the metal confirms that the piece left our hands. This is how we understand responsibility for jewellery meant to last for generations.
Certification at BELLER does not end with diamonds. The sapphires, tourmalines, garnets and peridots that enter our collections pass through the hands of a gemmologist and receive a description in the BELLER certificate: the type of stone, its colour, clarity, weight and dimensions.
If you would like to talk about a particular stone, we are at your service like a personal advisor: write via Assistance, email atelier@bellerpol.sbs or visit our atelier in Warsaw at Mokotowska 71 and in Krakow at Szczepańska 9. Our gemmologist will tell you about the stone's origin and help you verify any report.
