This mineral is named Grape Agate because of its likeness to that of a cluster of grapes. It is composed if tiny spheres of Botryoidal Purple Chalcedony that bond to each other. Each sphere is a microcrystalline variety of Quartz.
Metaphysical practitioners believe that natural Grape Agate quiets the mind, allowing for the center of consciousness to center on the heart. It can be a valuable tool for peace and tranquility.