In a full day's search on the last day of March, Mike Jacobs of Monticello and I found 121 agates. That seemed a lot to an amateur like me, whose agate hunting has been largely confined to looking ...

Known for their colors and patterns, collectors are often amazed at agates that turn up on Upper Peninsula lakeshores, with some known to be up to 20 pounds, according to the Michigan Department of ...

Thanks to fire and ice, treasures abound. This summer, agate collectors are on the hunt in eastern Minnesota and western Wisconsin, searching for rocks that can fetch as much as thousands of dollars ...

The Oregon coast is known for all kinds of natural beauty. Seashells, however, are not one of them. But that doesn’t stop crowds from coming to the coast to search the sand for that one special ...

MOOSE LAKE, Minn. — On a cold, blustery day in April, Bel and I headed to the North Shore to meet up with a rock star named Taylor, or as he’s known on social media, “Agate Dad.” Taylor is famous in ...

The geochemistry of agate and chalcedony in volcanic rocks represents an intricate record of silica precipitation and crystallisation processes occurring under variable thermal and chemical conditions ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...

SAUK RAPIDS, Minn. -- For Lyndon Johnson, treasures can be found anywhere -- one just has to train his or her eye. "I know when to look and where, and where to look when," Johnson said with a smile.