This Giant Glow in the Dark Geode by Scientific Explorer is a first. Imagine turning out the lights and seeing the eerie glow of your giant geodes. Their hollow orbs glittering with glowing crystals. The Giant Geode 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 realistic crystal formations in two to three days. Great for science fairs and family learning.Ages 9 and up.By Scientific Explorer