Structure
The Structure of Diamonds:
Diamond and graphite are built from the same element, carbon only, but their crystal shapes are very different one from another.
The phenomenon is called polymorphism (multi-formalism) and the trait fixed chemical compound to appear in several crystal forms.
The diamond is a lattice atom. Carbon atoms in a crystal are arranged so that each atom creates covalent bonds with four other atoms that are close around each atom's structure was created four carbon atoms arranged in vertices of the tetrahedron. This structure is very stable (a low energy level), from pairs of electrons involved in perfect covalent bonds apart to the maximum extent. Stability of the structure is what gives a diamond its strength and hardness.
