The collection contains mainly reviews on the structure, growth and properties of crystals. The published materials reflect the current state of research in the field of symmetry theory, structure of liquid crystals, mechanisms of nucleation and growth of crystals, formation of defects during crystallization. Methods and results of studying the real structure of crystals and its connection with optical, mechanical, electrical and magnetic properties are given. A special section is devoted to phase transitions, optical, magneto-optical, photo- and ferroelectric phenomena in crystals. The authors of the collection are well-known specialists in the field of crystallography and solid state physics. The publication is designed for scientists, teachers and graduate students involved in crystallography and solid state physics.