This Crayon Gem will make all your rainbow coloring dreams come true! With just one swipe of this beautiful crayon, you can add a rainbow to any coloring project. No rainstorm required. Not only that, the crayon itself is a sculptural work of art with its faceted gem shape. It’s surely an art supply you won’t want to tuck away. Size: 5" wide x 3" high. Non-toxic. Ages 3 and up.