Differential scanning calorimetry measurements for silver-containing chalcogenide glasses along the pseudo-binary tie line (Ag2Se)(x)(AsSe)((1-x)) with high silver content are reported and discussed. The glass-transition temperatures (T-g) are independent of the Ag content. No correlation between T,and the first-nearest neighbour mean coordination numbers is observed for x > 0.25, which indicates that the onset of viscous dow is independent of the rigidity of the glassy network in these chalcogenide glasses. The crystallization proceeds in three stages. X-ray diffraction phase analysis has shown that the hexagonal (metastable) modification of the AgAsSe2 phase is formed in the first crystallization process; it is then transformed into the tetragonal AgAsSe2 phase, followed by crystallization of the Ag3AsSe3 phase. The enthalpy of primary crystallization decreases with increasing Ag content, accompanied by an increase of the activation energy of primary crystallization and the thermal stability of the supercooled liquid, which suggests a change of the crystallization mechanism.