Science: Synthetic Stones

It takes Mother Nature some millions of years, by a combination of extreme heat and pressure to produce rocks, minerals and other hard things. Science is doing the same thing now in a few hours. Granite and jade have been made synthetically in a single working day at the geophysical laboratory of the Carnegie Institution of Washington, D. C. The substances known to be contained in the mineral desired are poured into a small platinum tube sealed with solid gold, which is placed in a "bomb" of the finest steel, along with...

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