HOLLOW GEODES crystals inside with a wide variety of minerals possible including Clear Quartz Scepter Quartz Fluorite Smokey Quartz Amethyst Mini Quartz Stalactites Druzy Calcite Goethite Hematite Agate and Chalcedony. ASSEMBLED IN THE USA by a REAL GEODE MINING COMPANY Manufacturered by Gem Center U.S.A.. GEODE AND NODULE GUIDE with information of how geodes form and mineral identification GOOD SIZES FOR THE YOUNG EXPLORER Approximately Golf ball to Racquetball Size 12 Naturally Occurring Break Your Own Geodes from MULTIPLE GEODE MINES