A study of the polychromy of Campana’s panels

The study focuses on the colour of architectural earthenwares known as Campana slabs, which often show polychromy remains. We have analysed several fragments of simas, crowning and revetment panels found between 2001 and 2013 on the northeast slopes of the Palatine Hill (Sapienza Università di Roma), in the excavation pit of the Arch of Constantine and in the House of Augustus. In this work, we have reported the results obtained on 21 samples by means of Optical Microscopy (OM), X-ray fluorescence spectroscopy (XRF) and Raman Spectroscopy. The analytical approach used has enabled to understand the palette and techniques used by ancient artists.