Would help if you post a pic in the photo gallery. Without a better description all I can do is guess that what you have are geodes, which might be filled with crystals or be solid agate inside. You might check for a rockhound club in your area. Or a rock shop. Someone there will likely have a better idea. Might even cut one in half so you can see what's inside.
From John D Gonzales-Lusk - May 03, 2014 at 21:25:23