Deep Origin Of Rare Blue Diamonds Revealed In Their Flaws

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WASHINGTON (AP) – Blue diamonds -like the Smithsonian’s famous Hope diamond- are the rarest of all. But how they formed more than a billion years ago is a bit of a mystery. Now scientists think they have a glimmer of an answer.
Their research published Wednesday found blue diamonds form deep inside the Earth – deeper than other diamonds.
(Photo credit: Paul J. Richards/AFP/Getty Images)
The scientists scrutinized imperfections in nearly four d