Marble ID?

[diggerbutt]

I always find some sort of marbles when digging. I don't know much about them, but I like to find them. Are any of them unique? Any ID help is appreciated.

 

[cheese]

I can't tell what they all are without closer better pics, but the last one is a nice looking vitro. It looks like it's in good shape. The black and white one might be a peltier peerless patch, not positive.

 

[diggerbutt]

Thanks Cheese for info on vitro. I'll try to take closer pics next time.