Fig. 4From: Colour identification, degradation processes and findings in a fifteenth-century Book of Hours: the case study of Cofre n.º 31 from Mafra National PalaceThe two yellow pigments: a hair of the Virgin, f.25r; b µ-Raman spectrum of lead–tin yellow type I (characteristic bands at 128 and 194 cm−1); c drap d’honneur, f.91r; d µ-EDXRF spectrum of mosaic gold featuring Sn, S and Au admixedBack to article page