A mild green colour, like that of the mineral.
A bright green mineral, a basic copper carbonate, Cu₂CO₃(OH)₂; one of the principal ores of copper.
Of a colour ranging from olive-taupe to a mild to deeply-rich (at times seemingly translucent) green, like that of the mineral which is present on oxidized copper.
A hemihydrate of calcium sulfate, made by calcining gypsum, that hardens when moistened and allowed to dry; used to make casts, molds and sculpture.