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Hunting greenstones is a tricky business, and this is a great find! What can I say about this stone? It is beautiful obicular pattern floating in a sea of calcite. This is a real investment piece, considering the average greenstone is half the size of a pea, and this is almost the exact size of a nickel. I could custom wire wrap this stone, or you could embed it in gold or silver and increase the value even more. It would be a great heirloom piece. 4.1 grams
The greenstone, also known as chlorastrolite, is the state gem of Michigan and is found only is small select areas of the Keweenaw Peninsula or on Isle Royale National Park.