Inside the hunt for unknown minerals in super-deep diamonds

I am in a diamond in my hand palm. As the gems go, nothing special: less than a grain of rice and full of impurities would get a poor price. But for researchers Nester KorolevThese impurities are invaluable for information that reveal the geological processes that are deepening within the Earth. All this, some of them as we found earlier. “I hope we meet a new mineral,” he said.

This particular diamond was formed about 600 miles …