Gs769
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Looking for an awesome gorgeous Greenstone with Thomsonite? This little treasure stone is beautifully shaped and highlights both the Greenstone pattern and the pretty pink Thomsonite that occurs in a swirly line across the surface. A top choice!
1.8 grams
11mm x 18mmx 7mm
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An Isle Royale Greenstone with Thomsonite Cabochon
Looking for an awesome gorgeous Greenstone with Thomsonite? This little treasure stone is beautifully shaped and highlights both the Greenstone pattern and the pretty pink Thomsonite that occurs in a swirly line across the surface. A top choice!
1.8 grams
11mm x 18mmx 7mm
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You will thrill when you see this in person. Pink Thomsonite bits march across the Greenstone asserting their presence. One of our favorite stones, if you are considering it, don’t let it slip away—order today.
The Michigan State Gem is commonly called "Greenstone", "Michigan Greenstone" or "Isle Royal Greenstone". The correct mineral name is Chlorastrolite, a variety of pumpellyite. Chlorastrolite is found as small pebbles on the beaches of Isle Royale in Lake Superior and also throughout the Keweenaw Peninsula. Greenstone is associated with the native copper deposits of Northern Michigan. The Michigan Greenstones are found as green/black nodules in vesicles of the amygdaloidal basalts. Most greenstones are smaller than a pea, and really large ones are extremely rare.