Malachite is a mineral that belongs to the carbonate family and is known for its stunning green color. This green color is due to the presence of copper within the mineral. Malachite forms in the upper oxidized portions of copper ore deposits, around limestone, and the copper within the rock is what gives it its distinctive green hue. Malachite can contain up to 57% of Copper in its purest form.The color of Malachite can vary from a light green to a dark, almost black green, depending on the concentration of copper within the mineral. The more copper there is, the darker the green malachite gemstone color will be.In addition to its vibrant green color, Malachite gemstone is also known for its unique banded patterns, which are a result of its formation process. These patterns can range from concentric circles to irregular shapes and can add to the stone's beauty.