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A bargain larger greenstone with a great pattern would make pretty jewelry. A tiny flaw on the bottom does not effect the stone.
The Michigan greenstone, also known as chlorastrolite, was selected as the state gem of Michigan in 1973. This rare mineral is found only on small select areas of the Keweenaw Peninsula or on Isle Royale National Park.
The Michigan greenstone, also known as chlorastrolite, was selected as the state gem of Michigan in 1973. This rare mineral is found only on small select areas of the Keweenaw Peninsula or on Isle Royale National Park.