It is good to use as a paper-weight or as a bookend for large sizes. Just put it down and it can be an beautiful object.
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. Crystal is a bit of a misleading term, it should actually be called lead glass (or mineral glass) because it does not have a crystalline structure. The benefits of crystal is its ability to be spun thin.