Certification and Authenticity
Tatiana Marques Jewelry brand certifies all the gold and sterling silver with/without a 24-carat gold bath pieces. They are certified by the INCM Assay Office incm.pt/portal/uco_atividade.jsp which verifies the legal touch, that is, permilation of precious metal contained in an alloy, and the application of the contrast along with the manufacturer's responsibility mark or equivalent. The application of marks is only mandatory on pieces weighing more than 2 grams.
The buyer can always, in case of doubt about the authenticity of the pieces, use the services of Assay Offices to verify the authenticity of the material.