I found this giant Pettit Point cluster ring. The shank has stamp work on it. I am hoping this is natural untreated turquoise. A couple of the stones have turned colors. I don’t think it is that old. Also I have not seen this Hallmark before and have not been able to find it in any of my books or online.
Edit:This is the work of Erecka Lee. She is the sister of Clarence Lee. As explained further down.
Thanks @Jason for setting me in the right direction. I found this in the Barton Wright book. It says the hallmark was also used by siblings along with their initial and this has an E and one of the sisters was named Erica.
I LOVE Clarence Lee’s storyteller cuffs and have been on the lookout for a good one for a little bit now. I love this ring too, quite the statement, and the stamping on the band is a nice addition. The very glassy appearance of the turquoise does make me wonder if it’s treated or stabilized in some way, though.