Chrysocolla,

often occurring mineral from the mineral class of silicates and germanates. It is blue and green in various compositions and colors.

Shattuckite,

rarely occurring mineral from the mineral class of silicates and germanates. It mainly developes fine-acicular to fibrous crystals of medium to dark blue color.

Quartz,

common mineral of the earth's crust. Pure it is completely transparent and colorless and is called "rock crystal". Due to the inclusion of colored minerals or other causes, quartz can be colored differently. Yellow to orange brown quartz is called "citrine", violet as "amethyst", pink as "rose quartz", etc.