Rare Copper Replacement Agate Copper Replacement Agate Each cabochon requires extended cutting

Each cabochon requires extended cutting time due to the stone’s variability in hardness and internal structure

This pendant is made from Pioneer Swirl furnace glass

Even stable material behaves inconsistently under the wheel

Once a viable section is identified

Rare Copper Replacement Agate Copper Replacement Agate Each cabochon requires extended cuttingCopper 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