Sacred geometry is the science of the forms on which energy, and therefore matter, is built. These forms that allow the Spirit to manifest itself in the material world, such as the human being. There are an infinite number of forms, but all, without exception, come from the seven primordial forms, the five Platonic solids, the sphere and the tetrahedral star. All the particles that make up energy and matter adopt one of these forms.
Crystals have the particularity of amplifying energies. They therefore have the possibility of helping us to better assimilate the essence of sacred geometry. The geometric shapes shaped in stone act on the physical substance to allow it to transform itself in order to receive and store more Light. 
The vibrational resonance of crystals allows each of the forms to better transmit the information they contain in order to adjust the energy of our being to bring us balance, harmony, centering and inner unity.
Working with crystals shaped according to sacred geometry brings better results to achieve the goals we desire to achieve.
Crystals, by their natural structure, already vibrate in the modulations of sacred geometry when we give them a particular form, we amplify their action, which allows them to become tools of transformation and evolution.