Researchers say discovery of ‘trigger’ that caused diamonds to rise closer to earth’s surface could help efforts to find more of the rare and valuable stones
Scientists said on Tuesday they have found the “missing ingredient” for pink diamonds – some of the world’s most expensive stones due their rarity and beauty – and the discovery could help find more.
Hugo Olierook, a researcher at Curtin University and the study’s lead author, said two of the three ingredients for forming pink diamonds were already known. In the 1980s, it was estimated that the Argyle diamonds emerged 1.2 billion years ago. But there was no “trigger” for the rare diamonds to rise at that time, Olierook said, so the researchers sought to establish a more accurate timeline.
That lined up with the breakup of the world’s first supercontinent, known as Nuna or Columbia. In Nuna, “just about every single landmass on Earth was squashed together”, Olierook said.Photograph: Murray Rayner/Nature Publishing Group/AFP/Getty Images
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