Lasers identify the country ? and even a mine ? that a precious stone hails from
Web edition : 12:38 pm
Most people know precious gemstones by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond sparkles like a star. It?s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear identical to one from the Democratic Republic of the Congo. But scientists have begun making big headway.
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Found in: Science News For Kids
Source: http://www.sciencenews.org/view/generic/id/335742/title/FOR_KIDS_Tracing_a_gem%E2%80%99s_origins
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