Mexico City Buenavista Handicraft Market Obsidian human head Natural stone Carving Interior Decoration Collection Rare Unusual item Good luck charm Shell Size approx. Height: 13cm Width: 15cm There are no cracks or peeling, but there is some dirt. Please check the condition of the product in the photos. Obsidian (kokuyoseki) is a type of volcanic rock and a gemstone made from it. As a rock name, it is called kokuyogan. The English name "Obsidian" comes from the description in Pliny the Elder's "Natural History" that a person named Obsius discovered this stone in Ethiopia. Thank you.