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Smithsonian Rock and Gem Dig

$13.44
  • Test for hardness
  • Test for streak
  • Learn how rocks and minerals are formed
  • Have fun with an archealogical dig
  • Detailed instructions


 Dig for semi-precious gemstones and minerals and identify your treasures. Test for hardness and streak. Learn how rocks and minerals are formed and have fun with an archealogical dig. Detailed instructions are included.