Costume brooch - Gold plated w/ oval green glass? stones.

This piece is 2 1/8" top to bottom by 1 3/8" across. The "stones" are I think glass as they are cold to the touch & I see what appears to be a bubble in one. They are light green with streaks of white & are prong set. They are domed on top & flat on the back. The metal is I assume gold plated as I see no types of marks.

1) Are my assumptions on the stones correct?
2) Does anyone recognize the style to point to a particular maker?
3) What kind of date would you put on this pin?
4) What are some key descriptive terms to use to describe both the stones & the pin itself?



Thanks for any & all advice or opinions!!

 

Bunch of grapes!

I agree on glass, although sometimes these had little bits of semi precious. 1960s ish.

 

Thanks @Ownedbybear !!

I am glad I asked because I would not have thought it was that early.

This piece came with a large lot of jewelry that I bought a while back that contained Sherman, Hattie Carnegie, & Weiss pins along with some other very nice pieces. It also felt like a better-made piece so I was kind of surprised not to find a mark on it.