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Michigan Greenstone Cabochon 2.4 grams
Gs761
New
A squarish/round cabochon of Michigan's State Gem Greenstone, distinguished by laying over a layer of white calcite which sort of frames it. 2.4grams
approximately 16mm x 15mm x .6mm
1 Item
Unique Item
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A nice small pattern of alligator circles are backed by a shimmery white calcite. This larger size cabochon and the combination of colors, good pattern on the greenstone make this a treasure. It is well suited for a special custom jewelry piece.
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.
