NSI International 49010 Smithsonian Electronic Crystal Growing Kit

The Smithsonian Electronic Crystal Growing Kit gives kids all the tools they need to grow frosty diamond-shaped crystals using potassium sulfate and spiky crystals with ammonium phosphate - ten crystals in total.

And if that weren't cool enough, an LED light-up base makes the crystals change color.

Kit includes:

• 2 bags of chemicals
• 3 bottles of coloring dye
• LED light base
• clear tray
• a pair of goggles
• 2 mixing sticks
• a bag of granite stones
• a magnifying glass
• and a color poster with detailed instructions.
• 1 CR2032 3V battery included

Ages 10+