See Video Rare Lake Superior Copper Banded Replacement Agate From Keweenaw Wolverine Mine Upper Peninsula #3
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Description
Only found in Upper Michigan's Keweenaw Peninsula, these RARE Copper Replacement agates were originally formed 1.1 billion years ago. Thenover a period of 13 million years, native copper was deposited & replaced certain bands of chalcedony in the agate structure, resulting in the formation of these rare & breathtaking stones! #3 Check out our other listings we are in the process of adding a ton of new fine jewelry with rare gemstones, & fine art! See Video Rare Lake Superior Copper Banded Replacement Agate From Keweenaw Wolverine Mine Upper Peninsula #3
