. Native Copper Slab | The Gem Shop, Inc.

Native Copper Slab


Native Copper Slab

Native Michigan copper slabs feature bright copper in matrix from the Michigan Keweenaw Peninsula.

Michigan's Keweenaw Peninsula is considered the most important locality in the world for pure native copper Mining began in 1845 and continued through 1982, and over 7 million tons of refined copper were recovered from the mines. At the turn of the 20th century it led the world in copper production adn "Lake Copper" was the purity standard.

Each slab is approximately 5cm x 4.5cm.