MALACHITE , Cu2CO3(OH)2 - Copper Carbonate Hydroxide. Beautiful rectangular box of Dark green polished Malachite. From Republic of the Congo (Zaire). Dimensions are: 7.5cm (3") Long by 5.5cm (2-1/8") Wide by 3.75cm (1-1/2") High. A fine Lapidary item.Weight 0.66 lbs. What appears as a scratch on the lid is part of the mineral design in the lid.