TOYS THAT TEACH: Experience the excitement of discovery like a real paleontologist as you excavate 21 unique gemstones ! Learn how to identify each stone INDIVIDUAL OR GROUP PLAY: This is the perfect set to use on your own or as a group activity or with parents! Manufacturered by ADS. DISCOVER AND PLAY: Simply soak the clay in water and then carefully chisel away the shell to excavate the dinosaur inside. Once your stone is excavated simply rinse off remaining clay and your child will be ready to play. RESPECTED QUALITY - Providing children with the best educational toys this kit is backed by ADSs 100% satisfaction guarantee INCLUDES: 21 different real gemstones - 1 chisels tools 1 instruction sheet with detail explanation and one kid's safety goggle glasses (for ages 4 and up).