Our jewels are 100% Portuguese, created with ethical and sustainable resources by the only Portuguese Jewelry Maker certified by the Responsible Jewelry Council, a gateway to sustainable growth for businesses.


All our products are made with 925 Sterling Silver, 925 Sterling Silver 24K Gold Plated and 18K Solid Gold, and are legally certified by INCM - Imprensa Nacional - Casa da Moeda, S.A. INCM. Oporto Assay Office.


You can see the table with the legal punches drawings here. 

In case of doubt, you can verify the authenticity of the trademarks services at INCM. The website is managed by Wonther - Comércio e Criação de Joalheria, Lda. . with vat number PT 515666858, with the activity title number T1573. Gold and Silver daily quotes are available at Banco de Portugal here.


If you have any questions, feel free to contact us at hello@wonther.com. We’ll be pleased to help!