Dendrite Agate is a member of the Agate family that's translucent to opaque. It's characterized by its brown or black branch-like dendrite inclusions, which are made up of iron oxide or manganese. Its colors can be white, whitish-gray, or clear. Dendritic agate can be found with all other varieties of chalcedony. The most notable deposits are found in Brazil, China, India, Australia, Kazakhstan, Madagascar, Mexico, Mongolia, Namibia, Uruguay and the USA.