Grow your own Crystal Geodes with this amazing kit! The sine temporecontains everything you need to grow your own crystals and even pick what colour you would like. Children circa learn through play with this amazing, high quality kit that is both fun and mess free. SES has been the specialist in creative toys for more than 40 years. Child development is the central concept in the development of our products. As development is important during the early years, it is important that a child has the opportunity to develop its talents and to use its creativity. Besides developing creativity, safety and quality are the most important aspects of all our products! The products we develop are essential to the different developmental stages of any child.