South African diamond provides new clues on Earth’s internal processes

A multidisciplinary and multiethnic team of scientists just published a paper in Nature where they explain the implications of having found calcium silicate perovskites contained within a tiny South African diamond.

The gem was dug from the Cullinan mine, located 40 kilometres east of Pretoria, where the world’s largest rough diamond was found in 1905. The mine was also the source of two of the largest diamonds in the British Crown Jewels.

According to the researchers, CaSiO3 is the fourth most abundant mineral on Earth but only recently they were able to prove that it exists in a stable form, as it forms deep inside Earth’s mantle. Such confirmation, possible thanks to the fact that the mineral was trapped in an unyielding container, provided new insights into the processes…

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