A different surprise lies inside each of these clay stones, just waiting to be discovered. Simply chisel away the stone to excavate petrified wood, fool's gold, amethyst, snowflake obsidian and 8 other minerals and fossils. Set includes one dozen individually wrapped clay stones, each with a chiseling tool and instructions—it's a perfect activity for groups or parties! Identify and learn about your geologic discoveries with the accompanying Field Guide to Fossils and Minerals.Only at MindWare, you'll recieve a FREE excavation kit with your purchase while supplies last, an $8.95 value.FREE bonus excavation kit includes a hammer and chiseling tool, brush and sponge, magnifying lens and reusable plastic mat for easy clean-up.

Age Recommendation: Ages 4 and up