The Okavango Blue Diamond, a dazzling 20.46-carat stone, is more than just a beautiful jewel-it's practically a miracle of ...

There's a mineral so rare that only one specimen of it has ever been found in the entire world. It's called kyawthuite ( cha-too-ite ), a tiny, tawny-hued grain weighing just a third of a gram (1.61 ...

BEIJING--China, the world’s top processor of rare earths, banned the export of technology to extract and separate the critical materials on Thursday, the country’s latest step to protect its ...

But this toxic waste may also be a treasure trove for the rare earth elements needed to propel the world toward clean energy. Scientists analyzed coal ash from power plants across the United ...