Villagers in Ethiopia uncover rare black opal nearly 10,000 ft high, reshaping the global gem market with vibrant stones.

A private collection of opals is slowly making its way around the world being shown privately to collectors. The hoard consists of 12 uncut, untreated black opals of varying shapes and sizes acquired ...

"When I see the earth, my palms get itchy," says Trevor Berry. The Adelaide native first came to the largely subterranean town of Coober Pedy in South Australia's mineral-rich outback on a school trip ...