Extremely rare, precious opal is in Santa Fe Australian miner discovers valuable gem We have something so rare to show you the man who found it said it was an act of god.

Common opal can be found all over the world, but the precious, coloured opal of Lightning Ridge is exceedingly rare. The traditional owners of this land have a longstanding relationship with opal.

Opal is known for its unique iridescence which makes it very popular amongst collectors and jewelers. This week, learn about common opal, precious opal and Nevada's state mineral, black fire opal!

Scientists discover new dinosaur that was the size of a dog after finding its jawbone fossilised in precious opal Two-legged reptile likely lived in the Cretaceous Period, 100 million years ago ...

Brian Berger, a Philadelphia-area gemologist, purchased a piece of opal with a fossilized insect trapped inside. Now, he is reaching out for help in identifying the mystery bug.

Today, the settlement even refers to itself as the "opal capital of the world", with the wider Australian deposits producing more than 80% of the world's precious opals.

The Fire of Australia, the world’s finest uncut opal, has gone on permanent public display for the first time since its discovery more than 60 years ago.

Less common is fiery opal, which has red and orange streaks and specks in it. Precious opal, which was treasured by Roman emperors, is the most valuable, ablaze with iridescent colors.