These collections let students explore the properties of rocks, fossils and minerals firsthand—from the glassy texture of obsidian to the distinct layers of mica! Each of the collections includes 15 easy-to-handle specimens, all labeled for simple identification. The complete set includes all 5 collections shown (for a total of 75 specimens), each with a teacher’s guide and a compartmentalized box for display and storage. Largest specimens measure 2". Each collection also available separately.