Newbie needs rock I.D. help.

[Jess jack]

Here is another piece from my grandfathers collection and couldn't find any like pictures on google.
It's rough/chunky on the back and the polished front has A nice clear quartz band.

Thanks, In advance, Jess.

 

[ToddsPoint]

Looks like breccia. Don't know anymore than that. Gary

 

[Jess jack]

Thank you, Very helpful.

 

[LoCash]

Almost looks like some of the Oregon Thundereggs. But I'm still pretty new to identifying as well. That quartz band is really cool.