Complete Copper Replacement Agate Ring Copper Replacement Agate and natural pattern clarity after

and natural pattern clarity after cutting from the original nodule form

quartz replacement

Copper Replacement Eye Agate – A Rare Piece of Michigan's Copper Country

Copper Replacement/Inclusionbrecciated Ghost Agate Cabochon🌹

An exceptionally uncommon Copper Replacement Agate containing preserved hematite tube structures and visible native copper mineralization

Complete Copper Replacement Agate Ring Copper Replacement Agate and natural pattern clarity afterThis 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