Christmas Countdown Calendars Healing Crystal Stone Advent Countdown Calendar Christmas Countdown Calendars Healing Crystal Stone Advent Countdown Calendar Specification: * Christmas countdown is an exciting time for kids. Using a countdown calendar is a way to increase holiday expectations. * This advent calendar is made of high-quality, safe, non-toxic materials, suitable for adults and children over 3 years old. * Includes rough and polished samples of rock. Makes an excellent STEM gift for girls and boys! * The toy advent calendar is a fun way to allow children to count down every day until Christmas and get some surprises every day. * This toy can keep your child away from electronic products, reduce stress and you can also practice numbers and counting skills with kids! * And with rock collection set for kids and surprise your little geologist that will spark your kid's curiosity and love for science and geology. * This is an ideal Christmas gift for children over 3 years older. Great Science Gift for Mineralogy & Geology Enthusiasts. Description: Packing Material: paper Main Material:stone Size:16.4cm*5cm*21cm Package including: 1 x Advent Calendar