Daily Quotation and Official Appraisers
Daily Quotation
You can check the daily quotation of precious metals on the website:
http://www.lbma.org.uk/prices-and-data
This information is also available on the Banco de Portugal website:
https://www.bportugal.pt/taxas-cambio
List of Official Appraisers
In doubt of the materials used in a product, the consumer can resort to one of the offical appraisers in the following list: