Uranium Glass Ball Toys The experiments are accompanied by

The experiments are accompanied by exciting stories of make-believe mysteries and crimes to solve

but it also comes in a beautiful box with magnetic closure that can be repurposed to store all of your kiddos' extravagant jewels

Perhaps it's trying to escape danger— a hungry Tyrannosaur or an exploding volcano

a tiny and timid kitty catpillar who loves to munch on flowers

Children from 1 year old will be able to follow the path of the caterpillar-balls that go from the sun to the clouds and then to the transparent tunnel

Uranium Glass Ball Toys The experiments are accompanied byIn the past, glass manufacturers added uranium to glass for color. Uranium has since become more strictly regulated, but the old uranium glass objects are still floating around. Because of the uranium content, these marbles glow bright green under ultraviolet light. * Size is around 1 diameter. * Some dents and manufacturing imperfections can be expected. * Slightly radioactive, but they're harmless. * Makes a great sample for uranium if you're