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the usable yield from field recovery is extremely low
Soft layers of cream
Once a viable section is identified
creating an optical illusion of organic bloom within lithic structure
Many stones of this type cannot survive full cabochon formation and are lost during the shaping process
Rare Copper Replacement Agate Copper Replacement Agate the usable yield from fieldCopper Replacement Agate Keweenaw Peninsula, Michigan A striking Copper Replacement Agate featuring a well defined copper structure surrounded by delicate banding. Soft layers of cream, and warm peach tones create a natural pattern that took millions of years to form within ancient volcanic rock. Copper Replacement Agates are among the most sought after agates from Michigan's Keweenaw Peninsula, formed when copper rich mineral solutions replaced
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