50 years ago, Michigan made the Petoskey stone the state stone. For a long time, I didn't know why — but turns out, it's because these rocks are AMAZING.

I made Petoskey stone stickers! Want one? Learn more here: https://www.etsy.com/shop/AlexisJDahl

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Small "But Actually" Note: Coldwater corals are also a thing! You can learn about them here. They're super cool. https://oceanexplorer.noaa.gov/facts/...


Sources:
Good overviews:
http://geo.msu.edu/extra/geogmich/pet...
https://www.mackinac.org/15583
https://www.petoskeyarea.com/media/pe...
https://oceanservice.noaa.gov/facts/c...

Journal papers:
https://www.tandfonline.com/doi/full/...
https://www.tandfonline.com/doi/pdf/1...

Photo Credit:
Nobu Tamura: https://en.wikipedia.org/wiki/File:Du...
Nobu Tamura: https://en.wikipedia.org/wiki/File:Tr...
Rod6807: https://commons.wikimedia.org/wiki/Fi...
D. Sharon Pruitt: https://commons.wikimedia.org/wiki/Fi...

Music Credit:
"On Brevity" (slowed) and "Memorized" by Josh Woodward. Free Download: http://joshwoodward.com