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All pieces are made in Portugal, with 925 silver and 925 silver with gold plating. Circus Jewelry pieces are certified by INCM - Imprensa Nacional - Casa da Moeda, SA. INCM provides this guarantee by verifying the legal touch (precious metal per thousand contained in an alloy) and the application of hallmark with the responsibility mark, manufacturer or equivalent.

Please check here the legal trademarks of the Portuguese INCM:


  • All items are legally marked where applicable;
  • All pieces are made in 925 silver, unless otherwise stated;
  • The buyer can check Assay services if in doubt about the authenticity of the pieces;
  • The website is managed by Mota & Magano with NIPC 516575465;
  • Daily price of gold, silver, platinum and palladium:
If you have any questions, please contact us via email:


The new assay office marks come into effect on January 1, 2021. From that date onwards, the assay marks will have the following specific symbols for each precious metal and for each legal detail:


The sale within the national territory of jewelery artefacts marked under the Convention on the Control and Marking of Artefacts of Precious Metals (Vienna Convention) is authorized.
The Common Control Mark (CCM), or Convention Mark, consists of the reproduction of a scale and a number, in Arabic numerals, expressed in thousandths, indicating the touch of the precious metal, framed within a perimeter indicating the type of precious metal. .


The Convention's marking system consists of the affixing of the following marks:
  • Responsibility Mark;
  • Assay Mark;
  • Common Control Mark (CCM);
  • Ring 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 website of the Convention:
List of entities with contrasting brands recognized by the Portuguese Quality Institute.


For the purposes of starting and carrying out the main activity of Jewelery Retail - Distance Communication Means, a mere prior communication was presented by Mariana Magano Santos Mota with NIF 217313370 to the website with tax address at Rua da Agra nº318 r/c; 4150-026 Port to which activity title nºT7296 was assigned.
Main Activity: Jewelry Retailer - Remote Communication Means
The mere prior communication is presented in accordance with the provisions of article 41 and 42 of the Legal Regime of Goldsmiths and Assay Offices (RJOC) approved by Law No. 98/2015, of August 18 and amended by Decree-Law No. 120/2017, of September 15th.