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A diamond is forever, so the advertisers would tell us, but so is the pollution it costs. It's a dirty business by any standard - and adds harmful greenhouse gases into the atmosphere.
So what if we told you about a start-up company that says it's producing the same sparking gems in a laboratory -- that actually help CLEAN the air?
CGTN climate reporter Gabriel Yue Yin visited "Impossible Diamond" in New York City, which touts diamonds - formed out of thin air.
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