How does this occur? It´s quite simple, you only need to understand that everything that you can see, including the human body is composed of atoms. Atoms have essencially positive, negative and neutral charges subject to the laws of magnetism. Crystals are as well, and their vibration is capable of 
influencing the energies that surround them. When you place them on your body the magnetism of their atoms will influence the vibration of light and color where they are placed, modifying  this energy according to the crystal used. 

Each crystal has a different atomic structure with a higher or lower number of electrons which determines its weight, density and color as well as the frequency at which it vibrates. The magnetism of this vibration is what we use in gemotherapy. 

Depending on our objective we choose one crystal or another and by doing so we can calm, stimulate, balance, cool, slow down...the energy field. This is the theme of our courses. Beforehand, we are available to give an introductory lecture.