Lake Superior agates often feature a brownish-red exterior that may be pitted and slightly translucent. They’re easiest to ...

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’s ...

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 ...

Lake Superior is the largest of Michigan’s Great Lakes and sits atop the beautiful Upper Peninsula. It’s a big deal for Michigan’s fishing, tourist, and commercial water industries, and offers plenty ...

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 ...