Diamond is considered to be the most precious and expensive gem in the world. But if we tell you that diamond is not the most expensive and rare gem in the world, will you believe it? But this is true ...

Deep beneath Earth's surface and scattered across remote corners of our planet lie treasures so extraordinary that their very ...

When it comes to the world of high jewelry—or haute joaillerie as it’s known—the most rarefied strata of jewelry rise to the ...

(Bloomberg) -- Even in the world of rare stones, Foxfire is a freak. It was buried in a place where big gem-quality diamonds aren’t supposed to exist. A Rio Tinto Group ore processor was configured to ...