The Wonders of Australia gold and silver coins feature an opal on the center of the reverse, drawing attention to what is ...

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 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 ...

OF precious gems the opal and the pearl take pride of place, for they seem to become part of their wearers, throwing up their beauty and receiving from them additional lustre. Our author has tried ...

If you want to do business with the government, go to Washington, D.C. If you want to do business with bankers, go to Wall Street. If you want to do business in opals, go to Coober Pedy, Australia.

The beautiful optical properties of the gemstone opal are the result of tiny amounts of uranium present when the stones were formed, say researchers in Australia. They claim that their work could lead ...

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 ...