Are these beads glass?

Hi. This bracelet was weirdly in with a lot of totally unrelated items recently purchased at an auction. I'll admit near total ignorance here.

The elastic band holding them together looks very cheap, so I'm assuming the beads are as well, but I thought I'd better ask before making it $3 at the antique mall.

Thank you!

 

Dyed aventurine - green stuff
Rhinestones - rhinestones
Red one: no idea

But odds are this isn't a crazy valuable piece. The elastic is better than most, so it's not junk, but $3-5 is probably about where it's at.

 

Thank you so much.