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Welcome to the forum. You’ve accurately described the necklace in terms of physical construction.
Beyond that, without provenance (a known maker and origin, with a certifiable paper trail, or history), it’s unlikely anyone will be able to tell you anything beyond that.
It looks like there is a symbol or initials from a vibratory engraver on the back which would make the likely date of fabrication 70’s or later. Can you provide a detailed close up on any hallmarks or initials stamped or engraved on the back of the piece?
Can you offer details about how and where you came in possession of the piece, and what you do know about it?
there also appear to be a number of blue venetian chevron “trade beads” used as spacers, which is not commonly found in native american work. it may have just been re-strung with the spacers to make the piece longer for someone, or it may be non-native entirely. I would describe it as “southwest style” until you reliably ID a hallmark or maker.