This review presents the analysis of the characteristic features of the structure, synthesis methods, and physicochemical properties of embryos that form the basis of ZSM-5 zeolites. Various physicochemical characteristics of the embryos and nanocrystals of ZSM-5 (X-ray diffraction, textural characteristics, morphology, infrared and nuclear magnetic resonance spectroscopy) are discussed and compared, and their similarities and differences are analyzed.