All Crystals and Stones will have variations in color, shape and size. Pictures are approximations of color, shape and size. Coppernite, a copper sulfide mineral, it is characterized by its metallic luster, dark gray to black color, and soft, sectile texture; its primary chemical property is its high copper content, readily reacting with oxygen to form copper oxides when exposed to air, often leading to a dark colored tarnished appearance. Chakras: Root Vitality: Coppernite is believed to help encourage and enhance strength, confidence, and vitality. Focus: Coppernite is said to be very grounding and is conductive to energy due to the trace amounts of copper in the stone, helping to keep focused and persevere. Grounding: Coppernite is said to connect deep within the earth, giving it very good calming and grounding abilities.