BMB Jewels


All pieces are made in Portugal, with silver sterling 925 and silver 925 with gold plated. BMB Jewels pieces are certified by INCM - Imprensa Nacional - Casa da Moeda, S.A. INCM provide this assurance by checking the legal touch (precious metal per thousand contained in an alloy) and the application of contrast with the responsibility mark, manufacturer or equivalent.

Please check here the legal trademarks of portuguese INCM:


  • All articles are legally marked, when applicable;
  • All pieces are made of 925 silver, unless otherwise stated;
  • The buyer can check the services of the Contrastaria, in case of doubt of the authenticity of the pieces;
  • The site is managed by Colares de Água, Lda. with vat number PT510738150;
  • Daily price of gold, silver, platinum and palladium::
Any doubt please contact us at:


The new marks from the testing office come into effect on January 1, 2021. As of that date, the testing marks will have the following symbols specific to each precious metal and each legal detail:


The sale on the national territory of jewelery artifacts marked under the Convention on the Control and Marking of Precious Metal Artifacts (Vienna Convention).
The Common Control Mark (CCM), or Convention Mark, consists of the reproduction of a scale and a number, in Arabic numerals, expressed in thousandths, indicative of the touch of the precious metal, framed in a perimeter indicative of the type of precious metal .


The Convention marking system consists of affixing the following marks:
  • Brand of Responsibility;
  • Contrast mark;
  • Common Control Mark (CCM);
  • Ringing number, in Arabic numerals.
Contracting States to the Convention:
Austria, Latvia, Cyprus, Lithuania, Croatia, Norway, Denmark, Poland, Slovenia, Portugal, Finland, United Kingdom, Netherlands, Czech Republic, Hungary, Slovakia, Ireland, Sweden, Israel, Switzerland, Serbia.
Official Convention website:
List of entities with contrasting marks recognized by the Portuguese Quality Institute.


For the purpose of beginning and exercising the main activity of Ourivesaria Retailer - Website, a mere prior communication was presented by Colares de Àgua Ld with the NIF 510738150 to the website with tax address at Rua Dr. Justino Cruz nº 142 2º Sala 2, 4700-314 Braga to which activity title nºT2972 was assigned.
Main Activity: Jewelery Retailer - Website
The mere prior communication is presented in terms of the provisions of article 41 and 42 of the Legal Regime of Goldsmiths and Contrastaries (RJOC) approved by Law No. 98/2015, of August 18th and amended by Decree-Law No. 120/2017, of September 15th.