Optical Gaia EDR3 (middle and right panels) and near-IR VVVX+2MASS (middle and left panels) CMDs for the GC Garro 02. We have included only PM-selected members, considering also those stars with a membership probability greater than 50%. We used a family of isochrones, changing metallicity and age in turn, in order to limit the age-metallicity degeneracy and derive their errors. For our convenience, we specify here that the unit of the age is ‘Gyr’ and that of the metallicity is ‘dex’ in the legend.