Trying to identify maker

Hi! I was wondering if anyone knows anything about this bracelet. Thanks. J.

Beautiful bracelet. Does this have any markings? A story of where you acquired?

The single stone bracelet is a nice older Navajo cuff. Could be a piece of Royston Turquoise. I am not sure that is a hallmark. I would expect to turn this bracelet and not find any marks. Possibilities could be stamping a piece of silver to see the stamp design, then using that piece to finish the end of the cuffs? I don’t know, but don’t believe that to be an identifying mark.

Thank you so much. I love learning this!