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This greenstone has an unusual shape (it is not flat on the back, but tapered), with a good pattern.A great specimen with dark background, but large chatoyant starry circles. It might be possible to cut two stones from this! 4.4 grams Great larger specimen for collectors.
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.
21mm x 16mm x 12mm