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 ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Opals may have been around for thousands of years, but they’re having a major resurgence in the jewelry ...