Kit includes the following genuine specimens: granite, limestone, basal, marble, pumice, calcite, pyrite, quartz, hematite, bornite, fluorite, magnetite, and soapstone;Grow three types of crystals: alum (potassium aluminum sulfate), copper (ll) sulfate, and potassium hexacyanoferrate (III);The National Geographic science kits from Thames and Kosmos further that mission by helping kids learn about science in a fun way;A portion of the proceeds from the sale of the National Geographic kits goes to support vital exploration, conservation, research, and education programs;Discover the secrets inside the pyramid

• Thames & Kosmos 642112 Crystals- Rocks & Minerals

Thames & Kosmos 642112 Crystals- Rocks & MineralsThames & Kosmos