United ScientificMineral ID Kit - 7 Pieces - Includes Streak Plates, Glass Plate, Dropper Bottle, Magnet, Nail, & Hand Lens - Great for Geology Classrooms & Basic Field Testing

United Scientific Mineral ID Kit - 7 Pieces - Includes Streak Plates, Glass Plate, Dropper Bottle, Magnet, Nail, & Hand Lens - Great for Geology Classrooms & Basic Field Testing

STEM Toy Mineral Science Kit Geology Rock Specimen for Young Geologists

Landical Moh's Hardness Test Kit 11 Piece Mineral Hardness Kit Include 9 Rock Mineral Specimens and 2 Unglazed Porcelain Streak Plates for Exploring Identifying Studying Geology and Earth Science