Artifact ID's please

I have some interesting finds from yesterday.
  One of the stones is Rhyolite  (2nd, left to right)   that seems to be worked a bit.      Is it the start of a point?.     
 Ive been told  pendants from lead  were also used?
 Is this one? (bottom left)...Thank you  

The two denticulates are (were) tools.  The others I've not much of an idea about.

2 scrapers
1 nutting stone
and 1 ?

Thank you.   

Soooo, here in the American Indian Artifacts room no one can tell me any thing else about the others???

Give it time, it hasn't been on here very long, ppl are busy...

 I think a nuting stone is the one with the indention or maybe a type of platform for grinding.I find them also. I am not sure on the rhyolite (sp). The others seemed to be fashioned and worked into what I do not know.
Sorry been in a deer stand all weekend 4-H 
Go Vols?
TnMtns