Black onyx is a type of chalcedony and a member of the quartz family. This stone enhances inner strength, endurance, and persistence during the completion of challenging tasks. It attracts good luck and a strong harvest. It also helps stimulate focus and conserves vital energy. Black onyx aids in memory retention. It encourages attention to detail and helps you to manage where and how you place your will and intention, which brings about personal power and strength. Black onyx has grounding and protective properties, balances scattered energies, and helps empaths by absorbing and transmuting lower vibrations within people or places.