malachite

This term refers specifically to a copper carbonate mineral characterized by its vivid green hue. In a geological context, it is often recognized by its botryoidal or globular growth patterns, which give the mineral a grape-like appearance.

As a material, it is primarily used in jewelry, decorative arts, and historically as a pigment. Because it is a mineral substance, it is typically treated as an uncountable mass noun when referring to the material itself, though it can be countable when referring to specific specimens or types of the mineral.