Malachite

**Chemical composition:** Cu₂CO₃(OH)₂

**Hardness:** 3.5‒4

**Density:** 3.9 g/cm³

**Crystal system:** Monoclinic

**Luster:** Adamantine to Vitreous

**Info:** Malachite is a copper carbonate hydroxide mineral with a characteristic green colour with shades from black-green to pale-green. Malachite is opaque, mostly occurring in a form of powder, botryoidal and stalagmitic aggregates. It also occasionally produces small columnar and acicular crystals. Malachite was used as a gemstone and mineral pigment or as a low quality ore of copper.

## Keywords
mineral malachite texture color ornamental stone semi-precious gemstone