3 cm shungite cube

Stone(s): Shungite Color: black Dimensions: 3 x 3 x 3 cm Approximate weight: 107 g Number of stones: stone sold individually Shape: polished cube. The “marks” on the stone are its natural veins, not scratches. Photos are non-contractual. Classification: no classification recognized by the International Mineralogical Association. Amorphous carbon type mineral. Mohs hardness: 3.5 – 4 Density: 2.1-2.4 Origin: Russia, Democratic Republic of Congo Care instructions: unless the stone is polished, it leaves black marks on your hands, which wash off easily with water. The polished cube may leave black marks along the edges.Shungite is fragile; handle with care.