Vintage Abstract Sterling Gemstone Ring, Southwestern Silver Ring Size 7.5

Vintage Sterling Silver Gemstone e Ring Size 7 1/2 Very unique handcrafted vintage ring with Southwestern Style. I believe this was made by a Native American artist (its signed either SM or WS) but I have not been able to attribute it to anyone Sterling silver, marked and tested Abstract, almost brutalist style frame Inlaid colorful stone, I believe this may be labrodite, but I am not a stone expert Fits size 7.5 Measures 1" tall and weighs 10.5 grams In very good vintage condition, only minor signs of wear appropriate to its age.