[Crash]

http://www.usatoday.com/tech/news/te...diamonds_x.htm

The other process is called chemical vapor deposition, or CVD. It's more subtle. It uses a combination of carbon gases, temperature and pressure that, Linares says, re-creates conditions present at the beginning of the universe. Atoms from the vapor land on a tiny diamond chip placed in the chamber. Then the vapor particles take on the structure of that diamond — growing the diamond, atom by atom, into a much bigger diamond.

CVD can make diamonds that are clear and utterly pure. It's also a way to make diamond wafers, much like silicon wafers for computer chips. The CVD process can be tweaked by putting in enough boron to allow the diamond to conduct a current. That turns the diamond into a semiconductor."

diamond fakes coming big time, impossible to tell the difference.