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Europe has a very rich and diversified cultural heritage of art works, including buildings, monuments and objects of all sizes, involving a great variety of materials. The continuous discovery of new art works opens the problem of their authentication. Advanced analytical techniques can be fundamental to understand the way of life, the culture and the technical and intellectual know-how of the artists. Indeed, the authentication of an art work involves the identification of the used materials, their production techniques and procedures used for the work realization. It is possible to know the origin and provenance of materials, including the location of the natural sources. Advanced analytical techniques also help one to understand degradation processes, corrosion, weathering, and preservation-conservation protocols. In this paper we present a painting attributed to Domenico Ghirlandaio. Ghirlandaio is a well-known artist of fifteenth century who contributes to the apprenticeship of Michelangelo Buonarroti. The study of the pigments used in this painting, which belongs to a private collection, has been supported mainly by means of laboratory two-dimensional X-ray microdiffraction (μXRD2). The possibility to obtain information about not only the phase, but also microstructure allows one to extract interesting consideration and to obtain evidence of the painter’s style and intention. [ABSTRACT FROM AUTHOR]