The primary chemical element found in diamonds is carbon. Diamonds are a crystalline form of carbon, with their atoms arranged in a highly structured lattice that gives them their remarkable hardness and brilliance. Carbon atoms in diamonds are bonded together in a tetrahedral structure, resulting in unique physical properties such as high refractive index and exceptional light dispersion. The process of diamond formation occurs deep within the Earth under immense pressure and heat over millions of years. Diamonds are not only valued as gemstones for their beauty but also have industrial applications due to their hardness, especially in cutting tools and abrasives.