This is the first and only glow-in-the-dark geode kit. Imagine turning out the lights and seeing the eerie glow in your giant geodes - their hollow orbs glittering with glowing crystals. The kit includes a mold and casting plaster for two geode halves, glow powder, growing chemicals, and a science guide. Your giant sparkling geodes will sprout with glass-like glowing structures, growing crystal formations like the astronauts cultivate in space within two to three days. Great for science fairs and family learning. Recommended for ages 9 and older.