Tim Lutz has created a treasure mine in a box - the Gem Hunter's Kit. Learn from a geologist how gems are formed, where to find them, and how to excavate and identify them. Start off by 'mining? the eight gems and minerals from the soft rock provided in the kit, then head for the hills and dig up new additions to your collection. Comes with excavation tool, 8 gems, and book that includes b/w photographs and illustrations.