Antonio Sgamellotti is an Academician of Lincei and Professor of Inorganic Chemistry at the University of Perugia. He is also Co-founder of the Center of Excellence SMAArt (Scientific Methodologies applied to Archaeology and Art). His research interests include advanced computations on chemistry, electronic and structural properties of molecules and inorganic materials, spectroscopic properties and characterization of archaeological and art-historical artefacts. Brunetto Giovanni Brunetti is a Full Professor of General and Inorganic Chemistry at the University of Perugia. He is also the coordinator for the European project CHARISMA (Cultural Heritage Advanced Research Infrastructures: Synergy for a Multidisciplinary Approach to Conservation/Restoration) and President of the Center of Excellence SMAArt (Scientific Methodologies applied to Archaeology and Art). Costanza Miliani is a researcher at the CNR Institute of Molecular Science and Technology (CNR-ISTM) and coordinator of the mobile laboratory MOLAB of the CHARISMA project. His research interests include non-invasive spectroscopic techniques for in-situ investigations on cultural heritage.