Stones That Rock  is a great lapidary web site to check out.  They have rough rocks with each piece of rough having a cut face so that you can see a portion of the rough.  They also offer slabs, and beautiful freeform cabochons.  Owners are Ralph and Mary Ann Sieler. Ralph was a recent Shop Friend of the Month winner, with his cacoxenite in amethyst cabochon.  (Cab image is pictured to the left.) See their web site by clicking on the following link: http://www.stonesthatrock.net