Crystals.
They are made of crystalline silicon.
Corundum is a crystalline form. This crystalline form is made up of aluminium oxide.
Crystalline is a solid and noncrystalline is a liquid. The word "crystalline" is from the base word "crystal". Salt is an example of a crystalline substance. Noncrystalline sugar is made from crystalline sugar (i.e., granules) and glucose syrup by heating an undissolved mixture of undiluted crystallized sugar and liquid glucose.
A geode +++ Not quite. A geode is a crystalline feature, but the crystalline rocks are generally the igneous ones, and minerals.
Overdose
Yes, being made up of a crystals.
A diamond is a crystalline solid. It is made up of carbon atoms arranged in a crystal lattice structure, which gives it its hardness and clarity. This organized arrangement of atoms is characteristic of crystalline solids.
Glass is made from sand, however sometimes Quartz Stones are moulded into it for decoration.
It is more simple to made bottles from glass or plastic and also cheaper.
cells
Both sand and quartz are made of the elements silicon and oxygen.
All sedimentary rocks are made by of deposition of the products of erosion either on land or more usually in water. Crystalline sedimentary rocks can be produced by the evaporation of a brine.