Fig. 4From: Exploring the transition from natural to synthetic dyes in the production of 19th-century Central Asian ikat textilesReflectance spectra acquired by FORS, showing the possible presence of (a) a triarylmethine green dye, (b, c) a triarylmethine blue dye, (d) a mixture of indigo and an unidentified green dye, (e) a triarylmethine purple dye, (f) an unidentified purple dyeBack to article page