Horrible Science - Creepy Crystals
Galt Toys Horrible Science
Grow a creepy crystal tree, create your own diamonds and make crystals that rock! Discover how crystals form and foul facts about crucial crystals. Contents: Ammonium dihydrogen orthophosphate 50g, tree growing solution, tree card, Petri-dish, colour tablet, seed crystal, round bottle, funnel, limestone rock, and Horrible Info leaflet.
8 years and onwards.