HOLDING TOWNSHIP, Minn. — Ed Opatz spotted the agate first. Look for it, he encouraged. It's got purple bands. Red bands. A perfect example. Four of us stood in a tight circle, but only Opatz saw the ...

GOLDEN VALLEY, Minn. - Minnesota's state gemstone is the Lake Superior agate, and for years it has fascinated those young and old. In response to a viewer question from our kiosk at the Science Museum ...

In 1969, the Minnesota Legislature declared the Lake Superior agate to be the state's official gemstone. Moose Lake has dubbed itself the "agate capital of the world" and Agate Days are celebrated ...

No one makes eye contact. They're too intent on the ground, searching for one of Central Minnesota's oldest buried treasures: Lake Superior agates. Butch Goldenstein figures he's found hundreds of ...

DULUTH — About 1.1 billion years ago here, fissures opened in the surface of the earth, depositing lakes of molten rock near what would eventually be the Twin Ports and Lake Superior. This is ...

Lyndon Johnson has a passion for collecting agates. Lyndon Johnson has maybe logged more miles walking than anyone in Minnesota. His passion is collecting agates. Every year Lyndon walks hundreds of ...

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 ...