The manmade gems are virtually identical to diamonds mined from deep in the earth. High tech is now transforming high-end jewelry and a number of bay area businesses are early adopters.

If lab-grown diamonds are going to be the next big thing in cellphones and an important part of future warfare, then Wednesday was a historic day in Gurnee. AKHAN Semiconductors, a high-tech manu ...

Using high-tech heavy-industry machines, engineers can transform the carbon from human ashes into diamond gems that are physically and chemically identical to natural diamonds.

What do you do with a $2 million natural yellow diamond? If you're at the Massachusetts Institute of Technology, you coat it in a wild high-tech material that makes any object look like it fell ...