Well, I was playing around with the double spherical blend material. In tying to make a good rock texture for various parts of a cave, I come up with a few materials that I though were just too cool to keep to myself...lol.
So here they are!
Some Things to Note:
The samples above were drawn with a white color selected. So if the materials look a little plain...its because they are. So there are several things you can do to personalize these materials.
Play around with the material's Noise Amount, Noise Curve, and Noise Radius.
Try adding a touch of Colorized Diffusion and Colorized Specular of your choice for even more variations.
Don't forget that after you have the object snapshot to the canvas, painting color variations with the Simple Brush or Colorized Brush (RGB Only!) can make them look even more realistic.
Have Fun!!! These are just suggestions but you know you can do whatever it is you want.
On a final note, I have included the lighting Setup from the image above. I believe that high ambient settings in either materials or lights rob the image if certain details in overall tonal range. Try it out, see what I mean.