The invention relates to a lead and barium-free crystal glass having a refraction index of at least 1.55, a weight percentage of more than 50 % SiO2, more than 0.6 % and less than 4 % B2O3, less than 3 % K2O, more than 12 % and less than 15 % Na2O, more than 4 % and less than 11 % CaO, more than 4,5 % ZnO, more than 9.25 % and less than 5 % AI2O3, less than 5 % TiO2 and less than 2 % MgO, less than 60 % SiO2 and 8 - 16 % ZnO, with the proviso that the total content of oxide of Pb, Ba, As is less than 0.1 %, the total content of oxide of Ti and La is less than 5 % and the total content of oxide of Nb, Ta, Yb, Y, W, Bi, Zr is less than 5 %, wherein no more than 1 % oxide of Nb, Ta, Yb and 3 % oxide of Y, W, Bi, Zr are contained.