Dendritic Agate: Meaning, History, Mending Properties and Powers, Realities, and Utilizations Did you had any idea that perhaps of the most dazzling assortment inside the agate family is, as a matter of fact, dendritic agate? These gemstones include wonderful branch and quill like incorporations on a hypnotizing smooth white foundation - as you notice the stone cautiously, you will feel as though minute trees and hedges are caught inside this stone. Mineralogically, the dendritic agate has a place with the chalcedony mineral family, which is only cryptocrystalline quartz, and it has dark to dull earthy colored incorporations comprised of manganese or iron oxide.