Responsibility marks and hallmarks
Anyone who produces and/or sells goods made from gold, silver or platinum stamped with a fineness (e.g. 'S925' for silver) must also ensure that the item is stamped with a responsibility mark registered with the Norwegian Industrial Property Office.
The responsibility mark identifies the manufacturer or importer who is responsible for ensuring that the goods have the correct fineness. Applications for a responsibility mark are submitted to the Norwegian Industrial Property Office via Altinn. A fee must be paid for the application to be processed.
If you import goods made of precious metals from an EU or EEA country, you do not need to apply for registration of a responsibility mark in Norway if the goods already have a legally valid hallmark from the country of origin. The only requirement is that the mark must not be too similar to a Norwegian responsibility mark, and that you notify the Norwegian Metrology Service before marketing the goods.