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An in situ, non-destructive study of the coloured glaze on ancient Egyptian faience objects has been performed. The research was undertaken to examine further the effectiveness of Raman microscopy as a tool for archaeometric analysis. Initial studies revealed that faience pigmentation could not be analysed when beneath the glaze but only through cross-sections where the glaze was broken or chipped. Further studies showed that Raman microscopy was unsuitable for the analysis of green, blue and white faience but was extremely effective for the analysis of red and yellow faience. A study of eight red and eight yellow faience fragments, dated to the XVIIIth Dynasty and uncovered at El-Amarna, revealed that all the red fragments were coloured with red ochre or red earth iron(III) oxide plus clay and silica and that the colour of the yellow fragments was due to lead antimonate yellow lead(II) antimonate. © 1997 by John Wiley & Sons, Ltd.
Clark et al. (Sat,) studied this question.