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Greenstone Cabochon .8 grams
Gs777
New
Here’s a very luscious Greenstone chunk in an oval shape. Glossy pattern is surrounded by almost a frame of darker color. It's lovely.
.8 grams
11mm x 9mm x 4mm
1 Item
Unique Item
More info
Thick makes for a sturdy stone, best for certain uses. This Michigan Greenstone has a great top surface and steeper sides...choose for a great jewelry project.
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.
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