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Johnco Productions Great Gizmos 4M Crystal Growing Experiment Kit
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- Make sure this fits by entering your model number.
- Conduct 7 crystal growing experiments
- An astonishing way to see science in action
- It's fun to watch the sparkling crystals grow in front of your eyes
- Display them in the specially designed display cases
- Suitable for children ages 10 and above
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4M : Crystal Growing - 7 crystals Experience