ALEX TOYS-Kid Concoctions: Grow a Crystal Dino. Everything you need to create a crystal Dinosaur! Watch the crystals grow in a few magical minutes. This package contains one paper dinosaur, two paper trees, crystal liquid (.7 fl oz), two trays and easy instructions. Conforms to ASTM F963 and D4236. Recommended for ages 6 and up. WARNING: CHOKING HAZARD-Small parts may be formed. Not for children under 3 years. Imported.