Add Yahoo as a preferred source to see more of our stories on Google. Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks ...

The Great Lakes, the largest freshwater system in the world, are home to a diverse geological makeup spanning hundreds of millions of years. While many head to the planet's largest freshwater body of ...

These “Yooperlite” rocks, found near Lake Superior in Michigan, fluoresce like sparkling lava when they’re hit with ultraviolet light. In 2017, gem and mineral dealer Erik Rintamaki stumbled upon ...

Erik Rintamaki was searching for rocks on a Michigan beach last summer when he made what he calls a “mind blowing” discovery. Resting among the thousands of pebbles covering the Lake Superior beach, ...

“Fluorescent sodalite-bearing syenite” is a mouthful, but these glowing rocks from the U.P. are also known as Yooperlite. Credit: Courtesy photo The 77th Greater Detroit Gem, Mineral & Fossil Show is ...

While the days continue to get shorter, the season for finding a specialty rock is in its final weeks. Yooperlites – as they’re called – have been picked up along the shorelines of the Great Lakes for ...

Yooperlite is a stone that under UV light, can glow like the sun. They're one of the hottest rocks to collect this year, and they can be seen at the Tulip City Gem and Mineral Show this weekend. Not ...