Sterling Navajo RB Richard Begay Lapis Necklace

Really nice vintage sterling silver, pearl and denim lapis necklace - Nice hand and stamp work - About 18.5” end to end - hallmarked RB Sterling; according to my jewelry book this stamp is shared by Navajo Silversmith Richard S Begay and his wife Rita Begay - Very well taken care of however it does show some patina so will need to be cleaned and/or polished if so desired