- azuriteA blue vitreous mineral; a basic hydrated copper carbonate, with the chemical formula Cu²⁺₃(CO₃)₂(OH)₂, used since antiquity as a blue pigment or ores to extract metallic copper.
- lazuriteA mineral of metamorphosed limestones. Lazurite forms the gemstone lapis lazuli, and crushed lazurite provided the ultramarine color in artists' paint of the Old Masters. Sodalite and lazurite form the sodalite group of silicate minerals. Chemical composition: Sodium aluminum silicate with sulphur, Na₄₋₅Al₃Si₃O₁₂S.