Unlike any other town known as a hole in the ground, Australia’s Coober Pedy really is a hole, and has two kinds of buried treasure. Unlike any other town known as a hole in the ground, Australia’s ...

The world’s finest uncut opal, a 998-gram gem called the Fire of Australia, has gone on permanent public display for the first time since its discovery more than 60 years ago. Valued at more than $675 ...

A giant opal that weighs nearly 12,000 carats received a six-figure bid at an auction in Anchorage, Alaska. The precious stone, which is split in two, was sold for $143,750 on Sunday by Alaska Premier ...

The red dirt in central Australia might be a close mimic for the red surface of Mars, suggests research that sheds light on how opals formed in the land Down Under. Precious opal is Australia’s ...

A herd of opal-encrusted dinosaurs representing an entirely new species has been discovered in Australia. The fossils were first unearthed in an opal mine in New South Wales back in the 1980s. After ...