This set features 10 translucent gem cubes in different colors of the rainbow. Explore creative play and early learning activities with these colorful manipulatives. These cubes are great for sorting, sequencing, patterning, stacking, counting and creating small-world scenes. Help toddlers develop fine-motor skills, descriptive language and early math skills. Pair these see-through gems with a light source to explore color mixing, internal reflections, shadows and more. Build towers in front of a window or let them sparkle in the sun. They're great for indoor or outdoor play. These chunky cubes are finished with smooth edges that are perfect for small hands. Made with durable acrylic, this set is designed to last for years of play. For ages 10m+. Size of cubes: 1". Recommended age 3+ years