![]() This is unlike most metals, which are found as oxides, carbonates, or other types of ores. It has also been found in various mines in the Upper Peninsula.ĭue to its nonreactive nature, it can be found in its elemental form in nature. Those looking to find this highest conducting metal would do well to look along the Iron River. The 47th element and a precious metal, silver can be found in certain parts of Michigan. That being said, several locals have crafted stunning, personalized jewelry, featuring the state’s gemstone. Owing to its rarity and its small size, chlorastolite does not have many aesthetic or jewelry-related uses. The largest ever found was 1.5 by 3 inches and is located in the Smithsonian. It is in Greenstone Ridge, the largest lava flow in the United States, that these state gemstones are formed.Ĭhlorastrolites are typically fairly small and rarely found larger than an inch in diameter. This name arises, in part, due to how its minerals crystallize from the cooling of hot lava. The more technical name of the gemstone is chlorastrolite, meaning green star stone. While its primary location is within its namesake, Isle Royale National Park, it may also be found in the Keweenaw Peninsula. These rare gemstones are green or blue and have a unique turtle shell pattern. Isle Royal Greenstoneįound in gem-quality only in Michigan, Isle Royal Greenstone is Michigan’s state gemstone. Moreover, glacial movements have also given the state a wealth of gemstones. This is in part due to the Midcontinent Rift System, near Lake Superior. Most of Michigan’s gemstones and minerals are formed following lava cooling or can be attributed to the minerals brought from lava. According to the USGS, the state contains 1853 mines. The Upper Peninsula is known for its lush natural resources, including the state’s gemstone, Isle Royal Greenstone. The 11th largest state, Michigan is comprised of two separate peninsulas. Always respect private property! Minerals and Gemstones Found in Michigan It is also your responsibility to verify and gain permission to visit each collection site that is mentioned on this website. ![]() Remember! It is your responsibility to know the rockhounding laws and regulations for each site you visit.
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