Native American ZME NM Zuni multi stone inlay turquoise cross silver pendant

Vintage Native American cross pendant , hand crafted by native artists It is signed in the back, but I cannot quite make out the signature . it says I believe, In the first row ZME. I believe this stand for Zeno and Maryann Edaaki, the artists . The second row says:  Zuni NM (this I can see a bit more clearly and I am confident that is what it says Sterling silver I think although there is no 925 mark as far as i can see Turquoise, coral, mother of pearl, & jet inlay. The darker stones are dark brown and navy blue and I am not sure what they are Multicolor inlay design Light wear No damage Cross measures 2 & 1/4"  length x 1 1/2"” width but please see the photos for more precise measurements Will be shipped with a (new) decorative pouch for storage