Here is a Dendritic Agate. This piece has colors of black and white, with black dendritics. Dendrites are tree-like inclusions. The white is translucent (you can see from the photo held up to the light) because of that it gets a darker shading off the black color, therefore, giving it a grey look. There is texture all around the surface because of the dendrites. There are some vugs on the back as shown in the back and side view photos.
Size: 44x23mm, 5.3mm thick