[en] A detailed study into the spectral and temperature characteristics of self-luminescence of vanadium garnets (M¹Ca₂)(M₂²)(V₃)O₁₂, where M¹ and M² are metals of the 1st and 2nd groups of the periodic system, has been made. Activation of garnets with Ln³⁺ ions results in quenching of their self-luminescence. At a temperature of 80 deg K, in the case of some Ln³⁺ ions, deep valleys are observed along with peaks against the background of self-luminescence. A temperature rise up to 420-480 deg K results in the valleys becoming shallower, which is probably due to the interaction between VO₄^3-- and Ln³⁺-centers