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 ...

Agates are formed from silica solutions filling gas bubbles in lava rocks, creating bands of color. The best time to find agates in Michigan is after a storm. Popular Michigan agate hunting locations ...

Add Yahoo as a preferred source to see more of our stories on Google. Known for their colors and patterns, collectors are often amazed at agates that turn up on Upper Peninsula lakeshores, with some ...

Selling the red, orange and yellow chunks of banded rock known as Lake Superior agate requires more than just owning a collection of the beautiful semi-precious gemstones. You also need to figure out ...

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 ...

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.

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 ...