Identification of the red ocher in the icon of A. Ritzos from Benaki museum collection (Icon:22251, 2nd half of 15th c.) by micro-Raman spectroscopy. Cross-section (sample of orange light) in (a) reflected and (b) UV light are shown. (c) Raman spectra of Red Ochre (laser source at 785nm). The complete stratigraphy (a, b) is as follows: (1) gesso ground; (2) red ochre, lead white and grains of carbon black and yellow ochre (3) underlay: organic lake and grains of lead white; (4) light: cinnabar and grains of lead white and yellow ochre; (5) varnish. Full article: https://konstantas.com/?p=14 #konstantasartsciences #benakimuseu #benaki #Ritzos #science #cretanschool #pigmentsanalysis #crossection #physicochemicalanalysis #identification #pigments #research #art #conservation #naturalpigments #earthpigments #artscience #artworks #icon #iconpainter https://www.instagram.com/p/CCcxjetJsSy/?igshid=95ljf3aols2y