Joint efforts of scientists from Switzerland, France and Germany were investigated "space diamond", which was found inside the meteorite Almahata Sitta. His remains were found in Sudan in 2008.
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According to scientists, the diamond could have formed on one of the protoplanets 4.55 billion years ago. It consists of small crystals, which require strong pressure to form. It can reach 200 thousand bar (2.9 million pound-force per square inch).
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"We demonstrated that such large crystals could not have formed as a result of the shock wave, but rather appeared inside the" embryo "," the scientists explain.