In our discussion, we have shown the OH-stretching region of Raman spectra, in the case of natrolite, scolecite, mesolite and gonnardite. The results of gonnardite have been compared to those of thomsonite and edingtonite. As stressed by , the Raman spectroscopy is able of distinguishing the minerals, due to their water content too. What could be interesting for future research, is the investigation of the Raman spectra of materials with ion exchange and of superhydrated minerals. Moreover, the synthetic zeolite A could be able of provide information about the water and its behavior in the framework.