Shungite pyramid from 3 cm to 7 cm

Stone(s): Shungite Color: black Dimensions: 3 cm/4 cm/5 cm/6 cm/7 cm Approx. weight: 24 g to 277 g Number of stones: sold individually Shape: Pyramidal. The “marks” on the stone are its natural veins and 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 the hands, which are easily cleaned with water. The polished cube may leave black marks along the edges. Shungite is fragile, handle with care.