Fig. 3: Results of optical microscopy and SEM on Sample Red 1. | npj Heritage Science

Fig. 3: Results of optical microscopy and SEM on Sample Red 1.

From: A multidisciplinary study of unusual red and blue lake pigments used in fifteenth-century Swedish wall paintings

Fig. 3

a Sample Red 1 embedded paint cross section, optical microscopy. a shows the light microscopic image (layer 4) of the top darker red paint layer (red glaze) with the fibrous red lake pigment. b Sample Red 1 embedded paint cross section, SEM-EDX. b shows the backscatter electron image (layer 4) of the same area of the top darker red paint layer (red glaze) with the fibrous red lake pigment.

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