Bone Pendant Girls by Terry S Friedman

Beware of jewelry that calls to you.
Andi Wyndham has been able to communicate with spirits since she was a kid. When a bone pendant carved into the likeness of a girl's face calls to her at a gem show in Pennsylvania, she can't resist buying it and a sister piece. When she discovers the girls are missing runaways and the pendants made of human bone, Andi is drawn into a mystery that will force her to confront her gifts, her guilt, and the ghosts haunting her.
Pendant Girls Mariah and Bennie urge Andi to find a man they call "Fisherman," a master of disguise. Teaming up with a handsome P. I. and a South Carolina sheriff, Andi must find the girls' bodies and put their souls to rest, before the Fisherman casts his deadly net to trap Andi.