Diamond is a naturally occurring mineral made of carbon atoms arranged in a crystal structure. It is the hardest known natural material and has high thermal conductivity. Diamonds are commonly used in jewelry, but they also have industrial applications due to their hardness.
Diamonds are formed deep within the Earth's mantle under high pressure and temperature. They are brought to the surface through volcanic eruptions in a type of rock called kimberlite.
Aside from being used in jewelry, diamonds have numerous industrial applications: