This necklace is made with natural black tourmaline and agate geode slices on an 18 karat gold plated chain that measures 20 inches in length. You are purchasing the necklace shown in the individual picture. 
Black Tourmaline Properties:
Tourmaline is believed to promote inspiration and happiness, reduce fear, and build self-confidence among its users. It's also used to balance yin-yang energies, as it's considered a physical bridge to the spiritual. Tourmaline comes in a variety of colors, the most common being black. Black tourmaline is one of the most coveted stones for protection and cleansing. It’s commonly used in rituals, grids, meditations, shrines and a variety of applications across continents, cultures and practices. Its ability to soak up, repel and banish negative energy is second to none in the healing crystal space. As it’s associated with the root chakra, black tourmaline is key in providing balance, security and grounding in your life.
Agate Healing Properties:
 
Agate properties connect with the energy of the Earth. They are thought to bring harmony to all aspects of the being, physical, spiritual and emotional. Using agate during times of unbalance, when it feels as if the yin and yang within you are operating out of proportion, can reintroduce an equilibrium to your tempered soul.