Hi group. I am hoping someone can help identify and value this unusual pendant I have. I thought it was turquoise but was told it is bisbee or ariozona chrysocola. It is a brutalist or mid century design and I am hoping someone may recognize the maker. The bale is marked 925, but I am not sure it is the original. The pendant is not marked but is silver. It measures 2 3/4" long by 2 1/4" and is heavy. Thank you for all opinions.
![turquoise pendant blue red back|666x500](upload://rzulVXZKhaDFe8lfSAXt1WWzKOf.JPG)