Making of 3D crystal model for crystallography practical Part 2

The Crystal model are essential to understand the mineral crystallization and symmetry element. All Geological laboratories have wooden crystal models. Here, the making of crystal models were described. The Card boards and plastic tapes easily available. So the model can be made by spending little money.
In this video, making of Trapezohedron, Pyritohedron, Rhombohedron and revision of Tetrahexahedron and Trisoctahedron were demonstrated.