In this tutorial, we learn how to paint rainbow nails with rhinestones. First, paint the nails light blue and let them dry. After this, grab several other colors, enough so that you have the colors of the rainbow. Now, paint lines onto the left hand corner going diagonally across the nail, making each line next to one another. After you get to the very tip of the nail, let the colors dry completely. Next, paint on a clear coat on top, then apply a pink heart rhinestone on the bottom corner of the nails. Allow these to dry, then you have gorgeous nails!