They exhibit high melting and boiling points and are very rigid.  
Atoms in this type of solid are held together by strong covalent bonds. Ceramic materials such as those used in superconductors are commonly of this type. They exhibit high melting and boiling points and are very rigid.  As a result, they tend to shatter rather than bend. For 10 points, name this type of solid whose common forms include diamond, graphite, and silicates.
Atoms in this type of solid are held together by strong covalent bonds.
{Network solid}s