Although Raman spectrometer is a helpful technique in the identification of the pigments, it should be mentioned that there are still limitations, such as certain pigments cannot be identified due to the strong fluorescence arising from the binding agent (Lauwers et al., 2014), the color and the ______ of the pigments were damaged due to the ageing, smoke damage and pollution (Yi et al., 2017), etc.
(Excerpt from: Bai, Xiaojian, Chen, Jia, Chen, Zhigen, Gong, Yuxuan, Cheng, Huwei & Wang, Jiayue. (2021). Analytical study of Buddha sculptures in Jingyin temple of Taiyuan, China. Heritage Science, 9(1), 2.)