What structural features of silicon (IV) oxide affect its properties? What types of this oxide do you know? Where are they used?

Substance of atomic structure.
Sand, flint, quartz, rock crystal, amethyst, carnelian, agate and onyx.
In construction, as abrasive materials (for mechanical processing: grinding, cutting, polishing), in the manufacture of ceramics (porcelain, faience), glass.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.