Galois groups distinguish the part of 3$d$ electrons in a volume of ‘orbital glass’ (OG). That renormalizes spectrum $\tilde{\varepsilon_{k}}$ of band fermions. Increasing of their mass $\Delta \varepsilon _{k}(L_{p})\cong$ 0.1 eV increases effective mass of $d$ fermions by $\Delta m^{*}\approx (1-10)m^{*}$ for part of 3$d$ band in the OG volume. The value of orbital moment decreases ($L$ < 1) that explains measured orbital moments of 3$d$ ions (Co, Ni, etc.).