Diameter (Approx ): 3.3cm (1,3'') Weight: 13g. This pendant made only of original shungite ( Grade 2) of Zazhoginsky deposit (Karelia, Russia). The pendant packed in a ziplock package. Shungite can leave black stains on the surface. However, you can easily remove them with water and soap. If the shungite stones have contact with water, the polished surface loses its gloss.