2.Fundamental characteristics of crystal .Spontaneous formation of polyhedral shapes F+V=E+2 Dodecahedron Icosahedron Cube 20 faces and 12 vertices Octahedron Tetrahedron Single crystal gold bead with naturally formed facets2. Fundamental characteristics of crystal •Spontaneous formation of polyhedral shapes F+V=E+2 Single crystal gold bead with naturally formed facets