A Cluster is a group of points, which form on a base or in a matrix. These crystals work as a team and have a wide variety of uses. Often they are used to hold a space or intention in a room or building and provide peace and harmony in groups, families or in a work setting. Clusters are great to strengthen the energy field of a chakra to help protect against etheric cords. They are also wonderful in promoting endurance and protecting against fatigue when working through a project or sport. They help one to feel comfortable in a crowd and are often used to help with agoraphobia. In addition, they have the classic traits associated with quartz which are energy amplification, memory, light bearing and programmability.