What is hidden in the plaster block? Use your hammer and chisel to dig out the exciting treasures that hide within it. Young scientists can explore the colourful underground world. Marvel at the sparkling rock crystal, luminous rose quartz, aventurine, amethyst and red jasper that they can dig out. This excavation kit offers up wonders of geology. Dig them out, clean and display them like real archeologists. The illustrated instructions show step by step how to get to your treasures and provide additional information about minerals. A playful and exciting experiment box from Kosmos for children aged 7 and over.