Thames & Kosmos: Crystal Growing – Experiment Kit

Grow dozens of dazzling crystals and conduct 15 illuminating experiments with this classic science kit. Experiment with four chemically different crystals each with different properties, including potassium alum crystals that form regular octahedrons, rapidly growing sodium sulfate crystals, long needle-shaped sodium acetate crystals, and plaster which is made from gypsum crystals.

Features:

• Mold fun plaster shapes, including stars, lightning bolts, dolphins, and pyramids, and grow layers of crystals on them.
• Use dyes to form coloured crystals, and mix the dyes to grow a rainbow of custom coloured 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.

Suitable for ages 10 & up