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 ...

A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that ...

Wisconsin moonstones are only found in a small corner of Marathon County. This business allows people to dig for them.

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 ...

Wire wrapping, geode cracking, and a collection of shiny rocks and gems will be on display for all to see at the 45th annual Gem and Mineral Show. The Indian Mounds Rock and Mineral Club will have ...

The Loup Valley Gem and Mineral Society's rock collections aren't just about rocks, charter member Cheryl Barnholdt explains ...

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.

Two test methods put the rocks at 4.16 billion years old The volcanic rocks date to primordial Earth's Hadean eon Rocks are surviving fragments of Earth's oldest crust June 26 (Reuters) - Along the ...

As summer days are in full swing, Oklahomans are taking part in adventures across the state. For all you that nerd out over that cool rock you found, and we say nerd out in the most loving way ...