Identification help, please!

[stolidog!!!]

I have a large ( 1.35") marble with exterior swirls that when I hold it to the light is cobalt colored. Anyone know anything about these? Thanks! It's also full of tiny bubbles.

[bobblocksmarbles]

Vacor de Mexico

[stolidog!!!]

Worth anything?

[final-final]

No real value  Still being sold for around a buck 

[stolidog!!!]

Thanks everyone!