Tincal, also known as sodium borate or borax is a porous mineral consisting of soft colorless crystals that dissolve easily in water. Among its many possible applications, it’s used in powder form during the process of melting metal or diluted, as a flux, during welding, acting as a supporting element of this process: it slows the oxidation of the metal and helps the solder to run along the joint of the two parts that you want to connect.


Tincal is also, since 2015, a virtual platform and jewelry atelier founded by Ana Pina, based in Porto (Portugal) and looking towards the world.

Under the motto curating and experimenting in contemporary jewelry, we launch collaborations and events that help to promote and invigorate this amazing creative area.



In the pedestrian zone of Cedofeita Street, one of the more lively arteries in the city center of Porto, next to Carlos Alberto Square, opens its doors the number 27 – 2nd floor front, in June of 2015.

A space open to receive peers who seek a creatively stimulating environment, customers who wish to see the work live and friends who want to simply say hello!


We have work tables available to be occupied in a monthly or occasional basis, with the ability to take advantage of specialized equipment and contacts, meet with clients and integrate a small group of colleagues with common interests.

More than an equipped workshop, we offer a workspace in a central location, with particular characteristics: practical, bright, inspiring.

For more information feel free to contact us.


A N A  P I N A

Ana Pina was born in Porto in 1980.

She graduates in architecture (FAUP, 2004) and works in an office for a few years, until she founds her passion for contemporary jewelry and decides to work as a jeweler full time. Her background in this area includes a workshop in school Contacto Directo and the professional course in school Engenho e Arte, besides some specific complementary workshops.


She develops her personal jewelry brand since 2012, designing and producing unique pieces or limited collections - Tincal lab is now the showroom of the brand and meeting point with colleagues, friends and customers.

In her work she combines traditional jewelry techniques and contemporary concepts of design in the creation of jewels with a strong abstract and geometric inspiration, in search of a modern and feminine style.

She's influenced by drawing, color, the nature of materials, contrasts and textures, geometric relations and asymmetries.


Tincal lab . Curating and experimenting in contemporary jewelry