Are any of these southern Lake Michigan beach rocks good for tumbling? I added a little water to some to show the shine. Not sure what they all are, I'm guessing quartzite

Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More) - Owlcation

Lake Superior Journal: Superior Blues - Lake Superior Magazine

Lake Superior - Pictured Rocks National Lakeshore (U.S. National Park Service)

Lake Superior Rocks, Tide, Colorful Stone Print, Michigan Beach Stones, Nature Photography, Coastal Beach Artwork, Gift Ideas 2

Antrim Creek Natural Area: You'll Long for this Huge Lake Michigan Beach, Petoskey Stones & Crystal Clear Creek

My Thru Hike Route Creations Seeking Lost: Thru-Hiking & Backpacking Adventures

I think I found my 1st agate. After weeks of combing a beach I finally found something noteworthy. Can anyone interject some wisdom about my humble stone? : r/rockhounds

Hike Archives - GoatManMike's Adventures

Hike Archives - GoatManMike's Adventures

Identifying the Rocks of Lake Michigan (Geode, Septarian, Agate, and More) - Owlcation

I think I found my 1st agate. After weeks of combing a beach I finally found something noteworthy. Can anyone interject some wisdom about my humble stone? : r/rockhounds

8 Rocks Found on Lake Michigan Beaches

North Carolina Rockhounding Location Guide & Map – Rockhound Resource

Lake Bluff dog beach consumed by concrete rocks — Four Season Swimmer