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 ...
The astonishing story behind a 100-million-dollar gemstone discovered by chance in Sri Lanka.
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 ...
WATERLOO — When you come across a conversation between Ray Anderson and Dave Malm, the best thing to do is sit and listen. Both rock enthusiasts, it’s easy to picture the conversation between them ...
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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