One spring day last year, Mark Longman was hiking around Castlewood Canyon State Park with questions that mounted with every boulder and rock wall he passed. A career geologist and longtime Denver ...
In Marathon County, the cooling process was slow, so the minerals that make up moonstone separated from other materials around it to form the distinct blueish rock. "Moonstone has been prized as a gem ...
Every year, something extraordinary happens in Tucson. Beneath the backdrop of rugged mountains and under an impossibly blue sky, the Tucson Gem and Mineral Show transforms the city into a global hub ...
Rocks store information from long ago. For instance, their composition can reveal the environmental conditions during their ...
A.K. Miles of Salem spent summers as a little girl traveling the Pacific Northwest with her grandparents, collecting rocks and helping her great-grandfather cut and polish them in his lapidary shop.
The astonishing story behind a 100-million-dollar gemstone discovered by chance in Sri Lanka.
One spring day last year, Mark Longman was hiking around Castlewood Canyon State Park with questions that mounted with every boulder and rock wall he passed. A career geologist and longtime Denver ...
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