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 ...

Geologist Nick Zentner strides excitedly across the wet sand on his first-ever visit to Oregon’s Agate Beach. But his attention is not on the scenic shore or sparkling waves. It’s on the cliff that ...

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 ...

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 ...

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 ...

Craig Prudhomme is a former naturalist and has been involved in planning Moose Lake’s Agate Days weekend for 18 years. Moose Lake is home to the largest agate on record. It weighs 108 pounds. “In 1969 ...

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 ...

A bill to create a new Minnesota license plate celebrating the North Shore and the Lake Superior Agate passed the state senate on Tuesday. The bill, authored by Senator Grant Hauschild, has already ...

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 ...