Possible Hopi Silver Eagle Feather(2) Ring W/O Hallmarks except Sterling

I am doing research on Native Americans and happen to come across this beautiful Sterling Silver Wedding Band Ring advertised on Ebay as Hopi, but it does NOT have any Artist’s hallmarks or initials or copyright markings.Only “STERLING”…
I was hoping someone has seen or know this very unique and fine quality Silver ring?
IT has 2 Eagle Feather on it in a small size of 7.5
I am trying to locate or identify the maker/artist and possible get one in size 11.
Please see the attached photo: