Vintage Sterling Silver row bracelet by Ernest & Vivnita Bewanika Zuni. It is set with 10 rectangular black jet stones. Jet is fossilized coal and found in New Mexico. stamp decorated to the terminal tips. 

Interior measures 5 1/4" plus the opening of 1 1/4". Weight: 9.4 grams. Hallmarked inside. Nice patina.

Jet is commonly used by NA artists, especially in inlay work. Jet is rather soft and one rarely finds piece like this. One stone does have a chip. It is located near the center.