Click on each painting to display the layers.
Cross-section seen under a scanning electron microscope [SEM] of a microsample taken from the flesh of Christ's hand (G: ground, P: primer, PT: paint layer). Right, the EDS spectrum obtained after analysing the area around a yellow granule in the primer layer (I) in which we detect the elements Fe, Ca, K, Si, Al and Na from ochre pigments and Pb and Sn from the lead-tin yellow pigment scraped off the palette.