Calcium titanate, the type mineral for the important perovskite crystal structure, often black or brown. It's a grounding stone associated with manifestation and Earth energies. (Important for materials science).
Black, Brown, Yellow, Reddish-Brown, Orange
Perovskite is classified as a oxide minerals mineral which typically crystallizes in the orthorhombic system. Its chemical formula is CaTiO3. Common crystal habits include pseudo cubic – crystals show a cubic outline.