JR Petit Point - looking for information

I found this beautiful necklace at a Discovery Shop in California. I searched online for hours to understand it better, but now am looking for help. I found a Lorraine Waatsa necklace online that nearly matches the silver, but this is signed JR and has a variety of stones. Can anyone help me learn more about it? Thanks so much.

I suspect the artist is Joyce Romancito from Zuni Pueblo NM. She was known for her cluster style squash blossom necklaces. I have no idea if she is still active or not.

Thank you, that helps a lot.