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 ...

GRAND MARAIS, Minn. — Among the many pastimes popular in Minnesota is agate hunting -- scanning the shores of Lake Superior for the official state gemstone. Relatively easy to find in the summer when ...

Harley Alcala says he found the mother lode of Lake Superior agates right in Lake Superior. Alcala was kayaking near his home in Hovland on the North Shore when he spotted the basketball-size rock ...

With the gales of November rolling in, anyone ready to bundle up in raincoats and waterproof boots may have luck spotting Lake Superior agates and other cool rocks. Late-fall weather already whipped ...

From the Leland Blue, a stone-like slag leftover from the iron ore and mining industry, to the glowing Yooperlite and Lake Superior agates found in the Upper Peninsula, Michigan is home to plenty of ...