Welcome to the Assay Office in the Netherlands
Goldsmiths and silversmiths
We can apply the correct hallmarks to products manufactured by you.
What if the collection you purchased does not bear the required hallmarks.
Have you imported a batch of jewellery that does not comply with Dutch laws and regulations.
On-site hallmarking at your location
The hallmarking process
The logistics department will receive your goods and check the status of the goods and the completeness of the batch before it enters the testing process. You may send your items to be assayed in various ways: send them by parcel service, have them picked up by the EWN external service or you can drop off items.Read more
The EWN assayers will determine the precious metal content of the objects you offer. EWN is accredited by the Dutch Accreditation Council for both NEN-EN-ISO/IEC 17020 and NEN-EN-ISO/IEC 17025.Read more
Stamping is still the most common method of applying hallmarks. Stamping may be carried out in three ways.Read more
In addition to stamping, hallmarks and responsibility marks can also be applied by laser engraving. There are a great many options, such as company logos, texts or images.Read more
Edelmetaal Waarborg Nederland
EWN has been certified as Assay Office by the Ministry of Economic Affairs and Climate Policy under the Dutch Assay Act. The Assay Act requires ornamental and utility articles of precious metal intended for the Dutch market to be tested by an independent body. Assay Office EWN is charged with this task as an independent administrative body.Read more