Slovak Opal Mines are located in the eastern Slovakia near Prešov, in cadastral area of Červenica. More than 22 km, seventeen levels of tunnels, shafts and adits were manually excavated in the ...

Coober Pedy was once covered by an ocean, which helped create the town's opal mines. Rare boulder opal in Coober Pedy, Australia. Dmitry Chulov/Shutterstock When the water receded, the minerals from ...

In Sight Inside the world of Australian opal miners who live underground November 16, 2016 More than 8 years ago ...

She owns the Spencer Opal Mine, the oldest and largest mine in the area. Couture’s parents bought their 40-acre claim in 1964, and the family moved to Spencer in 1968 when she was 15.

Prospecting for fire opal in Queretaro, Mexico The Gem Odyssey Two gemologists, Carlos Torres and Laurent Massi, have created “The Gem Odyssey,” a company that provides private excursions to ...

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 ...

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 ...