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How lab-grown diamonds are taking the shine off mined gems

For years, diamond mining companies told consumers that "a diamond is forever." But in recent decades, the diamond industry has come under fire for its links to conflict, corruption, and colonialism. Now, diamonds can be grown in a lab at a fraction of the cost. So will mined gems become a thing of the past? Or will they live up to their purveyors' promise and last forever?

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