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Discovery Files - "Brilliant Achievement"

Discovery Files
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Discovery Files - "Brilliant Achievement"

Credit: NSF/Clear Channel Communications/Karson Productions

Audio Transcript:

This 10-carat diamond wasn't mined. It was made.

I'm Bob Karson with "The Discovery Files" -- new advances in science and engineering from the National Science Foundation.

Malcolm Forbes once said, "Diamonds are nothing more than chunks of coal that stuck to their jobs." In recent times, science has been able to emulate nature's work, but the process is costly. Most man-made diamonds are either yellow or brown, or are less than 3 carats, limiting their use as gems or in optical applications.

Researchers at Carnegie Institution have changed all that, with a new rapid synthesis technique that has produced a colorless 10-carat, half-inch thick single-crystal diamond...a feat that has never been achieved. And they're now working on methods of fabricating even larger 1-inch single crystal diamonds, at a rate possibly as fast as 1 millimeter per hour.

This major breakthrough ensures diamonds really are forever, for commercial, industrial, and scientific use. Practical...but maybe not quite as romantic.

"The Discovery Files" covers projects funded by the government's National Science Foundation. Federally sponsored research -- brought to you, by you! Learn more at

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