This is a handmade pendulum made from Malachite (as the pendant part), and a Hamsa Hand with a Jet bead in the middle as the part you hold. The chain is made from silver plated steel jewelry chain, meaning that the chain is steel with a silver plated finish.

(US Imperial Ruler in pictures for scale)

Pendulums are used for a variety of practices which include: attunement/energy alignment, finding energy sources like vortexes,  answering simple yes/no questions and more.

Each stone and crystal has metaphysical properties that can help aid in specific situations, help boost certain body functions/body parts, and can even offer different insight into the seen and unseen world around us.

Malachite: It is a powerful stone to protect you from negative entities. These green crystals have an excellent action to aid you to take action, and to make changes in your life where required. It aids creativity, enhances the development of your intuition, and is a strong stone for the heart, both for the physical heart and to aid your healing emotionally.

Jet: Represents protection against physical pain, illness, violence, mental and psychic attacks. It was often used as a shaman stone in Native American Tribes. It also helps with clairvoyance and helps the user figure out their place in life.   

Hamsa Hand: Is a multi-cultural symbol. It shows up in multiple different cultures and regions of the world under a few different names. It is thought to have originated in ancient Mesopotamia. It is a symbol of protection, strength, and power, said to help ward off negative energies and psychic attacks.