For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more ...

Prospecting for fire opal in Queretaro, Mexico The Gem Odyssey Two gemologists, Carlos Torres and Laurent Massi, have created “The Gem Odyssey,” a company that provides private excursions to ...

Nevada Royal Peacock Opal Mines: This spot in Denio offers travelers the chance to mine or their own opals. For those who are new to digging, staff located on-site can show guests the basics. The ...

Gemstones are precious, especially when they come filled with dinosaur bones. Back in the 1980s, a miner unearthed a slew of fossils preserved in opals in an opal mine near Lightning Ridge in ...

The new dinosaur fossil was found in an opal mine and has turned into the gem itself, making it the most complete opalized dinosaur skeleton in the world, according to a new study.

They uncovered more than 60 fossils in the mine. They were displayed there for a few years before Foster brought them to the Australian Opal Centre.