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4.3B-Year-Old 'Diamonds' Aren't Exactly Diamonds

4.3B-Year-Old 'Diamonds' Aren't Exactly Diamonds

(NEWSER– Back in 2007, a team of researchers said they'd found 4.3-billion-year-old diamonds inside zircon crystals taken from Australia's Jack Hills. But those researchers had used a grinding paste made of synthetic diamonds to polish the zircons in preparation for lab tests ... and now a different team of scientists has discovered the so-called "diamonds" are actually just fragments of that polishing grit that got pushed into tiny cracks, LiveSciencereports. The first team of researchers agrees with the conclusion, but insists there might still be ancient diamonds deeper inside the zircon; the second team of researchers—and some other experts—say that's extremely unlikely.

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