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Michigan Greenstone Cabochon 1.7 grams

Reference: Gs764

Condition: New

A slightly oval large cabochon of Michigan's State Gem Greenstone, chatoyant with an alligator pattern. 1.7grams

Approximately 12mm x 15mm x 4mm

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Michigan Greenstone Cabochon 1.7 grams

A slightly oval large cabochon of Michigan's State Gem Greenstone, chatoyant with an alligator pattern. 1.7grams

Approximately 12mm x 15mm x 4mm

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Large Greenstone with good pattern are fun to work with and wear. This stone is chatoyant and has alligator pattern across most of the surface. A darker spot sets off one area, creating a contrast. An eye-catcher for sure!

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.