Rustydusty319

So I'm new and have this one I would like to be identified. It measures 5/8" it almost black with light blue internal and external swirls.

The dark one at the bottom when the light hits it has lighter blue misty swirls inside any ideas on this one? I think it's beautiful.

Sorry not so clear

I assume one of these

A couple more hard to capture all the details

Here are a few that I pulled out to show

Novice to the marble world. I have been picking up marbles for sometime now. Where do I start to find what's valuable or not?