Hue and intensity of colored diamonds Diamond which is chemically pure and structurally perfect is perfectly transparent with no hue or color. The color of the diamond is affected by chemical impurities or even structural defects in the crystal lattice.
Diamond not just an allotrope of Carbon Diamond is an allotrope of carbon. The most important properties of diamond are related to its structure. In diamond, each carbon atom is in sp3 hybridised state and is linked to four other neighbouring carbon atoms held at the corners of a regular tetrahedron by covalent bonds.