Unmarked Sterling and Turquoise Cross

Hi all. I’m new to this site and very much appreciate your help. I have this cross that has no marks whatsoever and I know nothing about turquoise jewelry. Can anyone help me identify its age and value, or anything else about it? Thank you!

https://www.ebay.com/itm/Old-Pawn-Zuni-Sterling-Turquoise-Petit-Point-Cross-Pendant-/123385243828?hash=item1cba5568b4%3Ag%3ANpsAAOSw61dbpwAD&nma=true&si=Tb4ms6k93IRpy6CqiRonv0lCSzc%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
The one above sold as Zuni for $20. Two more below currently listed as Zuni between $40 & $50. I like the design - when cleaned-up will be a pretty piece.
https://ebay.to/2Og7n8y
https://ebay.to/2A5daVT

Thank you so much!!!