The beaches at Grand Marais are excellent hunting grounds for the ancient Lake Superior agate, a semi-precious stone made up of concentric circles of microcrystaline quartz reddened by iron. Here ...

Size: Lake Superior agates range from about the size of a pea up to 20 pounds. Color: Red, orange and yellow, all caused by iron, are the main colors. Formation: Agates go back about a billion years.

Lake Superior agates: From find to finish For agate collectors, the search is a hunt for buried treasure. Fewer rocks and fewer places to search don't diminish the thrill.

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 ...

The most obvious place to find agates — Lake Superior — is actually the least favorite of most expert rockhounds. "I've hunted on the beaches many times, but so have 3 billion people from ...

Agates were formed a billion years ago by volcanic eruptions from Lake Superior to Mille Lacs Lake. Glacial movement deposited the agates all the way down to Nebraska. Aired 03/02/2025 ...

5. To learn more about stones that can be found on Michigan beaches, Oakland recommends checking books such as the "Rock Pickers Guide" series by Bruce Mueller and Kevin Gauthier or attending a ...

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 ...