Rare and beautiful items have always had a grip on the imagination — and finances — of humankind. Since ancient times, precious minerals like gold have been revered and used in everything from jewelry ...

Usually, what springs to mind when you think of the world’s most expensive substances are gold, silver, and platinum. However, according to a study conducted by the BBC’s ‘Science Focus,’ the reality ...

In recent weeks, you've likely heard a lot about rare-earth substances, thanks to President Trump's stalled efforts to secure a minerals deal with Ukraine and his talk of annexing Greenland. These ...