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Greenstone Cabochon 1.6 grams
Gs773
New
A medium-sized Michigan Greenstone cabochon with a good thickness for stability, and a darker pattern as preferred by some customers. Use this for your own jewelry or add to your state gemstone collection.
14mm x 11mm x 6mm
1 Item
Unique Item
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A heftier stone, this will satisfy your craving for a darker patterned Chlorastrolite cabochon.
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.
