Mystery Rock is a clay matrix embedded with 10 real specimens waiting to be discovered. Unearth the ancient secrets buried within...you'll be amazed by what you find:
4 real gemstones, including a genuine emerald
3 actual prehistoric fossils, including a 70-80 million year old dinosaur bone
3 rock and mineral specimens, including 'fool's gold'
Also included: excavation tool, specimen brush, log and activity book and sorting trays.
