4M Crystal Mining Kit Dig away the plaster rock to discover beautiful crystals and start your own collection. This scientific toy includes a special digging tool to help you discover 3 crystals imbedded in the plaster. Made using safe and high quality materials, this product is designed to last. Give the gift of science with toys and gadgets that foster curiosity and encourage scientific learning. Recommended for ages 5 and up. Challenge your child's imagination with 4M toys and kits. 4M educational toys cover a wide range of educational subjects and include science kits, arts and crafts kits, robotics kits, and more. 4M offers a wide range of toys and kits to let you build a clock, crochet a placemat, or turn your room into a planetarium--all in the name of making learning fun. Includes 3 crystals imbedded in plaster to discover Includes special digging tool Start your own crystal collection Fun and educational For ages 5 and up