Greenhaw is a site which had some wonderful Tennessee agate. It produced a lot of large agates for a short time. It is my understanding most of it was found on the surface. The site was Posted shortly after it was discovered. This Tennessee agate has a beautiful red edge moving to a clear agate with fortification in the center. What makes it so special is the clear center has green colored material on each of the fortification lines. I will be adding more as time goes on.