A copper sulfide, an important copper ore, typically dark grey to black with a metallic luster. It's associated with transformation, intuition, and stimulating energy flow.
Dark Lead-Grey, Blackish-Grey, often with a bluish or greenish tarnish
Chalcocite is classified as a sulfide minerals mineral which typically crystallizes in the monoclinic system. Its chemical formula is copper(I) sulfide: Cu2S. Common crystal habits include tabular to prismatic crystals also massive to granular, (pseudo-orthorhombic).