Marbles reference pictures

I am sharing these pictures as a reference, feel free to use them for your own Art as long as you cite this page as your reference.

I did write a blog post on the Crafsty website where I am showing how I draw a marble picture like this with colored pencils: http://www.craftsy.com/blog/2014/01/colored-pencil-drawing/

Click on any picture to see a larger version.