Smithsonian Rock and Gem Dig
Learn how rocks and
minerals are formed. Excavate and Identify
gemstones and minerals.
Test for hardness and streak. Full color
sheet included. Fun, interesting and educational.
to discover 11 real gemstones and minerals!
Block Containing 11 Real Gemstones, Minerals or Rocks
1 Pair of Goggles
1 Streak Plate
1 Magnifying Glass
and 23" x 17" Color Poster with Instructions
Conforms to ASTM D-4236
Adult Supervision Required