A plastic glass lies on the black volcanic sand on the beach by the sea.
0:07
A plastic glass lies on the black volcanic sand on the beach by the sea.
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AdobePalma_TV
Michigan’s state gem isn’t a stone you will find on the beach. It’s trapped underground inside the volcanic rock that makes up the Keweenaw Peninsula and Lake Superior basin. When the right material is located, each stone has to be carefully hammered out to avoid cracking it. Many pieces don’t survive, and few that do have a gemmy pattern. #chlorastrolite #michigangreenstone #stategem #greenstone #michigan #lapidary #mineral #gemstone | Opalus of Rochester
0:23
Michigan’s state gem isn’t a stone you will find on the beach. It’s trapped underground inside the volcanic rock that makes up the Keweenaw Peninsula and Lake Superior basin. When the right material is located, each stone has to be carefully hammered out to avoid cracking it. Many pieces don’t survive, and few that do have a gemmy pattern. #chlorastrolite #michigangreenstone #stategem #greenstone #michigan #lapidary #mineral #gemstone | Opalus of Rochester
199 views6 months ago
FacebookOpalus of Rochester
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