State Gemstone: Lake Superior Agates (1969)
While in Minnesota, you’ll want to head to Lake Superior to search for the Lake Superior Agates. These beautiful rocks can be found in localities across almost the entire state due to the relatively recent glacial activity which is responsible for transporting and exposing these unique specimens.
Glacial activity carved out Minnesota’s lakes and transported these rocks from the basalt flows to the north and left them behind in glacial deposits for you and I to find.
Minnesota also has an ancient history of Volcanoes and vast seas once covered the entire state.
Please note that rock collecting locations are always changing so be sure to check with the site owner for the most current information before going.
Dig safe, never go underground, and make sure to get permission from the landowner to search for and collect rocks.