Calcite is one of the most abundant species on the planet, but Tsumeb Calcites come in a wide range of habits and colors, making them one of the most diverse species from this historic and prolific locality. This highly attractive display specimen comprises dozens of razor sharp, highly lustrous, white, rhombohedra of Calcite with a wash of reddish colored Hematite inclusions on two sides, creating a stunning two-tone color effect. Largest Crystal: 2.5 cm. on edge. Ex. Richard Kosnar Collection.