It used to take the Earth 3 billion years, 2,000-degree temperatures, a little carbon and a lot of pressure to grow a diamond. Now, a new machine can do it in five days. In Kerrville, Texas, a small ...
Diamonds may be forever. But their market value? That might prove less eternal. In a sign of the times spotted by Ars Technica, you can now buy a diamond-generating machine on the Chinese online ...
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