I want to know the answer to the following question:
Obsidian is what type of glass?
All the background I'm provided with is that "The earliest known glass objects, of the mid third millennium BCE, were beads, perhaps initially created as accidental by-products of metal-working (slags) or during the production of faience, a pre-glass vitreous material made by a process similar to glazing.". Is that enough to answer the question?
Answer: no