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This huge stone displays a pattern that looks like lily pads floating on a pond. Crystalline calcite encapsulates the greenstone, making the pattern look very three-dimensional. This stone is 2.5cm x 1.8cm. Unbelievable! 5.3 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.