Vintage pendant Southwestern mother of pearl silver tone green black inlay

Vintage Southwestern pendant Green and black and mother of pearl inlay I think it might be crushed Malachite and maybe Onyx silver tone metal Signed on the back "Alpaca Mexico". It's in good preowned conditon, some minor wear + dark patina. See photo next to quarter for size reference (pendant only, no chain) Ships fast! MAUSi815PF2M5L teardrop shaped western jewelry