Our perennially popular hands-on kit introduces curious children to the fascinating science of geology. In the illustrated, fact-filled, 64page handbook, kids will learn how gems and minerals are formed and where to find them. Then they can actually excavate eight genuine gems and minerals -- including hematite, obsidian, and copper -- from the enclosed slab of rock. The special excavation tool, gem tray, sparkly gem stickers, gem identification chart, and step-by-step instructions help in identification and classification of their exciting discoveries. Also in the Discovery Kit™ series