Hydrilla

Thank you so much. Unfortunately that one does have quite a large chip. It's good to know more about them though.

Hi, I am not a marble collector. I buy vintage buttons and they often come with marbles. I tried to look them up, but with the machine glass ones I can't tell a $100 marble from one not worth 50 cents, so I've just been tossing them all in a box together. Are any of these of interest? The two in the last picture glow under black light. I appreciate any help you can give. Thank you so much.