It’s proposal season, and engagements are on the rise. So are factory-made diamond sales. Not that you’d know the difference. Man-made diamonds look the same as naturally occurring ones. The ...

The U.S. Air Force may soon be adding some serious bling to its aircraft, in the form of windows made from 80-carat diamonds.

The diamonds, as flawless as any other worn at that event, weren’t dug out of the ground, they were grown in a laboratory. Related article Future design: What 'living' clothes can do to absorb ...