Thoughts on the age of these 4 different pairs of earrings?

Hi everyone,

I have some earrings I got in a job lot and I was wonder what age they all might be? I was also wondering what the brown swirly pair are made from, do we think celluloid? I was wondering if the green circular pair may be unmarked silver? I am new to silver testing so will try to test them too, but I thought I would ask here in the meantime.

The other green and clear glass square pair I am keen to find out the age of in particular. I thought they were interesting as the clear glass seems like it must be glued in, as it is inserted in the middle of the green glass. The red ones are the only ones with marks and have a patent number on the back.

TYIA for any information you can provide on these four pairs of earrings!

 

I'd say early to mid-50s on the last two. The red set has a patent number on the back. The brown ones are 70s or later, so unlikely to be anything other than pretty. The green ones might be sterling, but I wouldn't lay odds on it. The stones are glass trying to be chrysoprase. It's worth testing though, because that's an old style of clip-on and they didn't always mark them.

 

Thank you @evelyb30 great to get an idea on the age of the earrings.

I don't have a tester unfortunately so can't test the green ones officially but I will take my loupe to them and hold them up to the light and see what happens, thank you.