Thames & Kosmos Crystal Growing

Grow dozens of dazzling crystals and conduct 15 illuminating experiments with this classic science kit! The 15 experiments progress from simple to complex, providing the perfect learning experience for new chemists. Grow dozens of dazzling crystals! A full-color, 32-page experiment manual guides your experiments in crystal chemistry.

Mold fun plaster shapes, including stars, lightning bolts, dolphins, and pyramids, and grow layers of crystals on them. Use dyes to form colored crystals, and mix the dyes to grow a rainbow of custom colored crystals. Display your crystal creations in a clear treasure chest with a locking lid.

Mold your own geode a hollow rock with crystals growing inside and create a beautiful crystal cavern inside. Experiment with growing crystals rapidly and slowly, and observe how that affects the crystal structures.

Measure how the crystallization of solids out of a solution, and the dissolution of crystals back into solution, affect the temperature of the solution. Learn about the energy of crystallization. Investigate solutions, crystallization, and the chemistry of crystal growing.


Age: 10 +

This kit is thoroughly tested and safe. A full-color, 32-page experiment manual guides your experiments in crystal chemistry and Earth science.

Kit Contents:

• Geode Mold and Basin
• Mould for Plaster Shapes
• Plaster (calcium sulfate)
• Potassium aluminium sulfate (50 g packet)
• Potassium aluminium sulfate (4 x 20 g packet)
• Tweezers
• Sodium Acetate
• Sodium Sulfate
• Lid Remover
• Pipette
• Wooden Spatulas (3)
• Dye Tablets
• Measuring cup, 200 mL (2)
• Measuring cups, 30 mL (3)
• Measuring cup lids (4)
• Treasure Chest
• Illustrated user's manual.

WARNING: CHOKING HAZARD Small Parts. Not for children under 3 years.