Certification
All Pura Filigrana pieces are certified by INCM
The INCM Assay Offices provide that guarantee by verifying the legal fineness (parts per thousand of precious metals contained in an alloy) and applying the hallmark next to the manufacturer or equivalent responsibility mark.
In case of doubt as to the authenticity of the trademarks, use, for verification purposes, the services of the Contrastarias;
If you want to know the daily prices for gold and silver:
https://www.bportugal.pt/taxas-cambio
http://aorp.pt/quotes
The site is operated by Pura Tribe, Unipessoal Lda. VAT: PT515265748, CAE 47910, activity title number T3606