Okay, so you think you've figured out which rocks are the same, eh? Well check the grid below with your picks to see if you got them right.Click on the poster itself to get a better view. The rocks that were lined out were the ones that did not have a match.
I have printed out a large 18"X24" poster of this image, that I will sell as a limited edition print for fifty dollars. If you are interested in purchasing one, contact me through the form also on this page.