Diopside- Diopside is a monoclinic pyroxene mineral. It consist of hardness of six. It is an important mineral on the earth’s mantle. It is found in Canada, Brazil, South Africa and Russia. Even United States have large deposits of diopside. Diopside mineral is used as base in ceramics and glass ceramics as potential applications in different technical areas. The gemstone from this mineral is used for ornamental purpose.