The Official Minnesota State Gemstone is the Lake Superior Agate! Formed in Minnesota a billion years ago, and distributed in the state 14,000 years ago by the Glacial movement. 😘 #LakeSuperiorAgate #LakeSuperiorAgates #Gemstone #minnesotagemstone #MinnesotaStateRock 😄 We have a select few AGATES for sale on eBay right now! Click below link to see what's available in stock!!!!.CLICK HERE TO SEE THEM NOW! -- https://www.ebay.com/sch/i.html?_dkr=1&iconV2Request=true&_blrs=recall_filtering&_ssn=mnlaketreasures&_oac=1&_nkw=agate&_sop=15