Moss Agate - Sometimes called Mocha Stone - has wispy three dimensional filaments that look like green moss floating in a pond. Sometimes the patterns are brown, red or orange. Though it looks like real moss it isn't organic in origin. Red Moss has Iron as its coloring agent and black moss is colored by Manganese
Green Moss from India
Priday Thunderegg Moss from Oregon
Sagenite - Also called Sagenitic Agate - has 3 dimensional needle like or acicular mineral growths. The inclusions are often shaped like fans or sunbursts and can be black, red, or yellow.
Plume Agate - has fluffy or feather like inclusions that are three dimensional and can be of varied colors. The inclusions can also resemble flowers or plants.
Photo 4 Graveyard Point Plume Agate
Photo 5 Graveyard Point Plume Agate
Photo 6 Marfa Plume Agate from Texas
Dendritic Agate - has two dimensional, thin, tree like growths that are most often black or dark brown. They are often colored black by Manganese and can occur on the surface of many different materials such as sandstone, talc, and limestones. They can also form in bands within an agate and this form is common with Montana Agate.
Photo 7 Montana Dendritic Agate
Photo 8 Montana Dendritic Agate in the shape of a flower
Druzy - also spelled Druse or Drusy - has a blanket of tiny sparkling Quartz crystals on a flat or curved surface. It is often found lining the inner surfaces of a geode. Other crystals such as Garnet, can form Druzy surfaces.
Brightly colored Druzy surfaces are mostly various minerals vacuum diffusion coated with titanium, gold
Photo 9 Druzy from a Brazilian Agate geode
Photo 10 Druzy from a very large Brazilian Agate geode