Please help identify makers mark N3 , P.B, JK , e

Here is another close up, a bit clear. Thank you so much for tying.

 

I see what you mean by the towers, it is the tiny mark on the right, not the big mark.
If I have time later on (and no headache), I'll try to tweak it a bit

 

Is that EE inside the oval on the left?

 

I think is FE

 

I definitely think that's an import mark. I also think your N3 is a stylised NB.

 

I also think the N3 is an NB and belongs to a manufacturing firm with the name Nicole Barr that does a lot of sterling and enamel pieces with white sapphires. Here is a link to their website. Googling the name brings up several examples of their pieces with the same NB 925 as yours.

 

Yay, quirky, you found it!
This one is the same ladybug on leaf design, on this pendant the leaf is a pale green. As you said, it says white sapphires for the stones, which makes more sense to me.

https://www.nicolebarr.com/brooches...-leaf-brooch-pendant-white-sapphire-nb0365yb/

 

Would white sapphire test as diamonds with a diamond tester?

 

Hooray!!!

Thank you so much.
One down, fantastic.

Any idea about the others? The blue Stone flower pendant I am curious, I think it has few more hallmarks, I will post a bit later.
Thanks again
Xx

 

I guess that depends on the diamond tester. Some of our members have had issues with their testers.

 

They shouldn't, but diamond testers have been fooled before if there's enough metal around a stone.