Obtain carbon-rich material
Apply extreme pressure
Apply extreme heat
Use high-pressure high-temperature equipment
Or use chemical vapor deposition
Grow diamond crystals on a substrate
Cool and remove the formed diamond
Cut and polish the diamond
Obtain carbon-rich material
Apply extreme pressure
Apply extreme heat
Use high-pressure high-temperature equipment
Or use chemical vapor deposition
Grow diamond crystals on a substrate
Cool and remove the formed diamond
Cut and polish the diamond