Gaia mean reflectance spectrum of the asteroid (4) Vesta, observed at an average phase angle of 21.3°, shown with black circles. Two ground-based spectra from Bus & Binzel (2002b), observed at a phase angle of 11.9°, and from MITHNEOS survey, observed at a phase angle of 23.5°, are shown with grey and black lines, respectively. Spectra from the NASA Dawn mission (Reddy et al. 2012) for the bright, dark, grey, and orange terrains are plotted, respectively, with black open squares, black open upside down triangles, black crosses, and black plus symbols. The red spectrum, plotted with black open diamonds, corresponds to the global average spectrum of Vesta. Vesta spectra presented in Reddy et al. (2012) were normalised at λ = 750 nm, and therefore we re-normalised them at λ = 550 nm. These spectra were obtained at a phase angle of 30°.