SAN FRANCISCO (CBS News) — At one Silicon Valley startup, engineers are doing in weeks what takes nature millions of years.

They’re making diamonds.

READ MORE: 4 San Jose Double Homicide Suspects Arrested; Drugs, Weapons Seized

“Just like out of mine, our growth chambers produce a rough diamond,” said Jeremy Scholz, Chief Technology Officer of the Diamond Foundry. “For us, in just a few weeks, we produce a one-carat stone with plasma and with chemistry. We’re accelerating the very same processes that happen in the earth.”


READ MORE: Contra Costa County Coroner Identifies Fatal Stabbing Victim as Concord Man

To protect their secrets from the competition, the Diamond Foundry provided only glimpses of the machines that — at 10,000 degrees Fahrenheit — rearrange carbon atoms into precious gems.

Chief Quality Officer John King of the Gemological Institute of America – who grades diamonds – said there is little difference between those mined from the earth and those grown in a machine.

MORE NEWS: Gun Rights Group Sues San Jose Over Liability Insurance Ordinance