AB navajo jewelry question

Is all ab navajo marked jewelry real silver, even if it is not marked? ?

The AB is the artist’s hallmark. It has nothing to do with the metal the piece was made out of. Not all Navajo jewelry is made with silver. Some might be copper and other pieces might be nickle. We have pieces that are not marked that are silver, and we see pieces that are marked silver that are nickle. Your bracelet looks sterling silver.