G412: Copper Slab – Locality: Keenwa, Michigan. –   Select Specimen: Native Copper. 

Appearance: High shine copper. The surface has been sealed with polyurethane. This protects the cooper specimen from oxidation.

Approximate measurements: LxWxH – 3″ – x 1/4″ x 1 7/8″.

Availability: single piece, exclusive