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Fig. 6: UV/Vis/NIR reflectance spectra of a reference lapis lazuli (lazurite mineral) and unknown blue paint samples from the Enkleistra (Koukoulli and Fischer 2011–2012)

Fig. 6: UV/Vis/NIR reflectance spectra of a reference lapis lazuli (lazurite mineral) and unknown blue paint samples from the Enkleistra (Koukoulli and Fischer 2011–2012)

Fig. 6: UV/Vis/NIR reflectance spectra of a reference lapis lazuli (lazurite mineral) and unknown blue paint samples from the Enkleistra. The identification of lapis lazuli in the blue paints was determined by its distinctive electronic spectrum displaying a strong and broad absorption around 600 nm in the visible caused by the S3 paramagnetic radical anion in lapis lazuli.

Photographer

Date

Catalog/Accession No.

95b859f37ad64e96928a2a38e901731c

Source

Byzantine Studies