Obsidian, AKA Dragonglass
In my latest book, Glass Girl, the central character, Emlin, is a glassmaker. Because the book takes place on a volcanic island, Emlin and her sister glass crafters are interested in their island’s obsidian. As you probably know, obsidian is glass that forms from lava if the minerals in the lava and the surrounding soil are of the right kind. It would usually be found on the ground in the lava flow, but you occasionally see it in some surprising…
