Christmas Advent Calendar, 24 Natural Crystal Agate Fossils Day Features: PRODUCT INCLUDES: This advent calendar has 24 small openings, each opening is filled with polished, , or green aventurine, citrine, carnelian, barley stone, superior, red jasper, gold stone, opal, rose Quartz, eyes, etc. Kids will discover a little surprise every day! EXCITING ACTIVITY: Contains 24 stones of different colors and shapes, let your child open a stone every day for learning and research. They' realize that fewer doors open means Christmas is just around the corner! New Year's Events: Advent Calendar is a great toy for kids birthday parties, school prizes, preschool props, teaching, parent-child interactions, and gift bags. Could be a Christmas countdown calendar to celebrate the arrival of the New Year. LEARN: The advent calendar gift box is printed with information about minerals to help understand and identify each in your collection. There is something for kids, families and enthusiasts to enjoy here. They are also great for Christmas garden decorations. WIDE APPLICATIONS: Collecting is a popular way for kids to in geology, explore the world and teach them about these fossils, rocks and crystals! This toy gift is for boys, girls, adults, kids and teens. Product Product includes: 1x stone Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.