The sparky rock thread

Here in the PNW, rockhounding is more of a thing than in New England, I think. It's pretty common to come across rock specimens at antique shows, swap meets and yard sales. Sometimes the prices are cheap; sometimes not.

I lucked out at a swap meet last weekend. Someone was selling decent sized rocks that looked sparky to me at 6 for $5. A pretty good deal. I picked through the box for the biggest samples.



I'm not a geologist but...

The sparky rock thread