Dendritic agate is a whitish-gray or colorless chalcedony with tree- or fern-like markings known as dendrites. The dendrites in dendritic agate are iron or manganese inclusions, usually brown or black in color. Though they appear organic due to their fern-like structure, they are actually inorganic; they are formed at fine fracture surfaces through crystallization of weathered solutions of neighboring rock.
Dendritic Agate is believed to aid in communication with nature. It is associated with the protection of the earth, rain, prosperity, abundance, healing, restoration and creativity. It said to improve self esteem and emotional balance.