Five graphic designers – Sagmeister & Walsh, Jonathan Barnbrook, Ian Anderson, Pedro Falcão and Jorge Silva – have created art pieces using marble and limestone for exhibition Still Motion, which opens today at the Triennale de Milan during Milan Design Week. The designers were invited by experimentadesign and Assimagra, the Portuguese association for mineral resources to work with these materials, atypical in the world of graphic design, to explore the possibilities of exploring stone as a new medium on communication. Still Motion is on view from March 30 to April 9 2017