3 Matching Brooches with JJP hallmark

I have these 3 matching pieces with a known but unidentified hallmark.

I think I found it HERE but without the top and bottom enclosing brackets that form the circle.

Each is 2 inches in diameter and weighs 20 grams

Any ideas about where the stones might have come from and approx value?

I would call these Navajo. I was unlucky finding a name for the hallmark. Lots of times I think these three initial hallmarks are a husband and wife team, so I spent sometime researching JP. I did get a hit on a Jonathan Platero (one piece) that was same cluster style and appeared to be same time period. I would call this Kingman, $120 each.

Thanks Jason, that’s great news and a little more info to look into than I had before.