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A pastel painting considered to have been painted by renowned Russian artist Natalia Goncharova in c. 1913 has been shown by Raman microscopy of the pigments to have been painted after 1952, with the identification of dioxazine violet. The implications of this discovery are discussed. This result highlights the need for reliable and perceptive dating procedures for valuation purposes.
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Chaplin et al. (2014) studied this question.
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