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Learn the chemistry behind crystal formation while growing dozens of sparkling gems worthy of display! Fifteen science experiments for kids yield dazzling sculptures and geodes that look like rubies, emeralds, quartz and amber. Investigate growing crystals rapidly and slowly, and observe how that affects the crystal structures. Includes a full-color, 32-page experiment manual and supplies.Plus, only at MindWare, this kit includes a BONUS mini crystal kit. Science kids say it’s a gem!• This is a brilliant experience in Earth science for kids!• Experiment with four chemically different crystals.• Mold your own geode with crystal cavern.• Tried and tested—over one million kits sold worldwide.