Fig. 9

a Skin tone created with lead white and minium (angel’s face, f.25r); b Raman spectrum showing the characteristic bands of minium (121 and 548 cm−1) and of lead white (1049 cm−1)
a Skin tone created with lead white and minium (angel’s face, f.25r); b Raman spectrum showing the characteristic bands of minium (121 and 548 cm−1) and of lead white (1049 cm−1)