Coober Pedy sits 846 kilometers north of Adelaide in the South Australian Outback, where summer temperatures regularly exceed 40°C and have reached above 50°C. To survive the heat, more than half of ...

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 ...

Designers are again showcasing the colorful gems, most of which are mined Down Under. By Vivian Morelli Photographs by Susan Wright Reporting from Sydney, Australia Opal, once a favorite of Art ...