Used to have alot of artifacts, but not much anymore. This piece always was my favorite, found in mid 60's here in Northern Ca. Part of a tomahawk, or fleshing tool ? Showed it to a so called "expert" once, and he said couldnt have come from my area.
I do believe that jade of some sort was gathered and traded through CA. I also believe that's the material of your tool.
The reason I got interested in the origins of this material, is because I found an Early Triangular point made from it, about 1200 miles from any known source. That tells the story of how well traveled the trading was, even towards the end of the Paleo era.