Most pendants are purely decorative. But a pendant may also hold a picture or a lock of hair of a lover or a child. And, perhaps because they hang protectively in front of the body and near the heart, pendants have often had symbolic and magical purposes. Thus, a pendant may be a charm or amulet, or its gems or metals may be felt to have health-giving properties. In architecture, a pendant is an ornament that hangs down from a structure, but unlike a necklace pendant, it’s usually solid and inflexible.

~Merriam-Webster~