Value real P.D?

[Aamirnicole]

I came across this ring at a local thrift that usually does ceased house donations. I paid $5 it was in a costume jewelry show case. Any thoughts on value or if it’s a real P.D or if it’s worth getting looked at by a Jeweler? Thank you!

 

[Tourmaline]

The dark spots that could be inclusions look more like dirt to me. The girdles of these stones are smooth. I think it is costume, especially if there isn't a gold mark.

What is a real P.D?

 

[HonestScript]

Hello, my brother found this exact ring. Was it worth anything?