Four quaternary sulfides SrCu 2 MS 4 and EuCu 2 MS 4 (M=Ge and Sn) were prepared from a thoroughly ground mixture of EuS or SrS, Cu, or Sn, and S in stoichiometric proportions. Electrical conductivity measurements on pressed pellets showed that all the phases are semiconductors. The optical band gaps were assessed at 2.8eV for SrCu 2 GeS 4 , 2.1eV for SrCu 2 SnS 4 , 2.2eV for EuCu 2 SnS 4 , and 1.6eV for EuCu 2 GeS 4 . Both Sr-based compounds present a temperature-independent paramagnetism, of about +135x10 - 6 and +92x10 - 6 emu/mol, for SrCu 2 SnS 4 and SrCu 2 GeS 4 , respectively. In the case of the europium compounds, they follow a Curie-Weiss dependence above 1.8K (EuCu 2 GeS 4 ) and above 4K (for EuCu 2 SnS 4 ), with values of the magnetic effective moment μ e f f and the Curie-Weiss temperature Θ, equal to 6.27μ B and -2.8K for EuCu 2 GeS 4 , and 6.81μ B and +0.7K, for EuCu 2 SnS 4 . The experimental magnetic moments confirm that the europium ion is in divalent state, similar to Sr in the related compounds.