Many years ago I had just read a Murder Mystery ( Dancehall of the Dead) set on an Indian Reservation. At one point an unusual arrowhead was mentioned. This was a pink quartz of some kind which was rare in the South West where the story was set. It was stated that these arrowheads were valued trade goods between tribes.
These heads had a chisel like tip among other things. The stone was opaque and looked like plastic. I know exactly what they looked like because lo and behold less than a week later I looked down and saw one poking of of the surface of a trail.
If I had not read that book I'd have had no clue that it was an arrowhead.
Looking at it you'd think the tip had snapped off but in fact they were made this way as a bone cutting chisel point. The stone probably wouldn't hold a sharp point anyway.
It,s still around here somewhere I'm sure but where I have no idea.