Complete Copper Replacement Agate Ring Copper Replacement Agate The bold eye formation draws

The bold eye formation draws immediate attention

This Copper Replacement Eye Agate was recovered from the historic mine regions of Michigan's Keweenaw Peninsula

As many traditional collecting locations continue to disappear

and another is now seasonally buried under shifting sand

Visible copper banding within the agate

Complete Copper Replacement Agate Ring Copper Replacement Agate The bold eye formation drawsThis ring is built around a copper replacement agate sourced from naturally formed nodules found within amygdaloidal basalt in the Keweenaw Peninsula region of Michigans Upper Peninsula. These nodules form as discrete rounded structures within volcanic basalt, and only a small percentage contain material suitable for cutting once exposed. Many are fractured, partially mineralized, or structurally unstable due to the way secondary copper mineralization