Antique Cameo wearing Necklace for ring mounting & Abalone cameo bracelet repair

Antique cameo, looks like it was in a ring. . this is in wonderful condition and measures 3/4 by 3/8 the bracelet is missing a clasp and some of the metal, but thought it could be used for something, the cameo's are nice 6 1/2 inches long and almost 1 inch wide