Any idea what these are and if they are worth anything?

[kcook]

 

[quito]

Welcome to the forum.

It looks like you have a very nice piece of Knife River Flint there. More pics of the other edges, will help determine use of the piece, and possible value. The other pieces, need more views of them too. I'm not certain the one far right is even an artifact from what little I can see anyways.

Oh yeah, where these pieces are from will help too.

 

[kcook]

Thanks for responding. The 1st and 3rd picture are of the same thing, and I have included more pictures like you suggested, these pictures are of the same item. Central Minnesota was where I found them

 

[rock]

scraper or knife could also be a broken blade tip. welcome to the site, rock

 

[monsterrack]

I go along with Rock it could be either one, but the other items It's hard to tell, the one on the left looks like a stone sitting inside anotherWelcome to Tnet.

 

[quito]

It looks like half a blade to me, it would have been spectacular whole. KRF isn't at all uncommon in Minnesota. Nice find!