I can't. Obsidian is a common black gem, also known as "Dragon Crystal" and "Ten Victory Stones". This is a natural silica, usually black. Obsidian has only been hyped up in recent ten years, and there is no historical inheritance. Obsidian can be processed into handicrafts. In reality, obsidian can't build a house. In addition, obsidian has the characteristics of glass, and the broken section is like a broken shell, which is very sharp. At present, most obsidian jewelry is produced in Central America and North America, and the national stone of Mexico is obsidian. China also produces obsidian, such as some places in Tibet.