Marta Costa Reis started studying jewelry in 2004, as a hobby, in parallel with other professional activities. She dedicated herself fully to this work in 2014. Costa Reis completed the jewelry course at Ar.Co – Centro de Arte e Comunicacção Visual, in Lisbon, and the Advanced Visual Arts Course at the same school, in addition to workshops with renowned teachers including Iris Eichenberg, Ruudt Peters, Lisa Walker, and Eija Mustonen, among others. In addition to being a jewelry artist, Costa Reis teaches jewelry history at Ar.Co, writes about jewelry, and curates exhibitions. She also serves as artistic director of the Lisbon Contemporary Jewellery Biennial and as a board member of Art Jewelry Forum.