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Greenstone Cabochon 1.4 grams
Gs767
New
This is an excellent 1.4 gram chlorastrolite stone, with chatoyant alligator pattern across the surface of the stone. With a flat back, buy this Michigan State Gem ready to be set into jewelry.
Approximately 10mm x 13mm x 4mm
1 Item
Unique Item
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A very nice medium-sized Michigan Greenstone is perfect for a jewelry setting.
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.
