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.