CICERO, Ind. (Hamilton County Reporter) — Dean Caldwell of Cicero has been mining opal and obsidian for six months of the year in Mexico for the last 15 years. Last year, he pulled an opal out of the ...

The Breakaways Reserve is located in the northern part of South Australia near the opal mining town of Coober Pedy. ... Coober Pedy is home to a small but diverse international community and mining ...

The Australian Opal Centre has announced the return of its nine-day Australian Opal Tour, visiting four opal-producing ...

Enchanting gem: The American Gem Society describes fine opal as an "enchanting gem" through which some believe "the mysteries of love can be exchanged." The Gemological Institute of America says opal ...

What is now desert was once under water, back when giant marine reptiles swam freely in a shallow sea that would later become Nevada’s Great Basin. Major geological activity happened, making way for ...