With the rapid advancement in technology and modern research and development, new discoveries have also been made in the field of material science. Scientists have over the past few years succeeded in formulating materials that are harder than diamond, which is the hardest known naturally occurring material.
Most of the extra hard substances are variations of diamonds and are often referred to as synthetic diamonds. They can be produced through various chemical processes, which include Chemical Vapor Deposition (CVD) and High Pressure High Temperature methods.
Chemical Vapor Deposition