Hey WildEd, how bout I send you a piece of obsidion and you chip out one for me and yourself. I have a bunch of obsidion and I know where a whole mountain {Obsidion Dome}is of it.
I would be glad to try. You probably would not believe how big a piece it takes to make a point. You lose about 95% of what you start with. Width and length is more important than thickness and it can not have fractures or cracks in the stone. Several of the points in my display are obsidian including the whole top row. Thanks, ET