Rare Hematite Tube Copper Replacement Agate Copper Replacement Agate Soft layers of cream

Soft layers of cream

A mesmerizing example of nature's precision

or structurally unstable material that cannot be reliably cut into cabochons

with all proportions built around its natural geometry

Rare Hematite Tube Copper Replacement Agate Copper Replacement Agate Soft layers of creamRare Hematite Tube Copper Replacement Agate Keweenaw Peninsula, Michigan An exceptionally uncommon Copper Replacement Agate containing preserved hematite tube structures and visible native copper mineralization. The dark tube like formations within this specimen are composed of hematite, while native copper occurs around portions of the tubes and can be observed within the agate itself, including a small but distinct area of copper banding. The