Mercedes Calcite (Chalcopyrite on Calcite) - Specimen limestone mineral Approximate Size of 1 piece:

Approximate Size of 1 piece: 4cm x 3

These tumblers are perfect for polishing your metalwork with steel shot

As someone that's seen a lot of rocks in my day

and estuaries

The crystals have a matte to slightly silky surface

Mercedes Calcite (Chalcopyrite on Calcite) - Specimen limestone mineral Approximate Size of 1 piece:Mined from: Daye Mine, Huangshi, Hubei Province, China Description: This specimen features a striking, oversized Mercedes style calcite crystal dominating the composition, with smaller companion crystals clustered along its base. The calcite is clear to slightly milky, with smooth, flattened faces that reflect light softly. What immediately stands out are the bold, sharply defined black bands running through the crystals, forming angular intersections