Featured What could these beads be made of please

Bought at antiques fair today in the bargain box. They're cold to the touch and feel gritty when rubbed on teeth which surprised me.

I have a few bits I have questions about and wasn't sure whether to put them all on one thread or separately?

 

They look like they could be apple coral, although the red on the apple coral I've seen is more orangey red.

 

My vote: individually.

 

Ooo I did wonder if they were coral but wasn't sure, thank you. They are very bright pink and the photos are not showing that too well.

 

Coral and dyed within an inch of its life.

 

There was I, thinking this pink doesn't look natural and you come along and confirm my thoughts

 

I also see coral, & most likely 'apple' type.