1, human technology has been able to simulate the environment in which diamonds are produced. Diamond is made of carbon, and a very small natural diamond is placed in the center under the high temperature and high pressure environment of 23℃, 15 to180 thousand atmospheric pressure.

2. There is high-temperature metal liquid around the drill, and graphite is on top of the metal solution. In this environment, carbon atoms in graphite will be arranged from metal atoms to diamonds, forming new diamonds.

However, the molecular structure of diamond manufactured by this method is not the complete octahedral structure of natural diamond, but a complex structure with limited volume.