>>1018853Are you in North America? The natives here had trading networks that transported processed obsidian cores over large distances, on foot. The tools: rocks, leather, maybe a piece of copper in the end of a stick if you're getting fancy.
With a car, you're probably not more than a couple of hours from a usable obsidian seam somewhere, exposed by a hillside cut along the road. Government geographical surveys, and then Google maps...you can find a seam without leaving your computer. With one trip you can get more obsidian than you'll ever need.
Or learn to identify chert.
