Healing Crystal Advent Calendar 2021, Art Calendar for Kids Rock Collection with Polished Pebbles and Gravel, Christmas Countdown Calendar (12/24 Days), Stone Collection Party Favor, Xmas Gift Features: Rock Collection for Kids A perfect standalone set or addition to any child's rock collection. Includes rough and polished samples of aventurine, rose quartz, snowflake obsidian, desert rose, red jasper, blue quartz, pumice, and meteorite specimens. A great STEM gift for girls and boys. Real Fossils Included Discover prehistoric shark teeth, gastropods, ammonites, clams, brachiopods, and more. The included magnifying glass, full-color learning guide, and identification sheet help identify each rock, gemstone, mineral, and fossil in the collection. Geode Exploration Each kit contains one broken geode and two unbroken geode specimens for hands-on cracking and discovery. Experience the excitement of breaking open geodes to reveal crystal formations inside. Natural Specimens This set includes a variety of natural ore and rough stones. A fun and educational activity for young geology enthusiasts. Ideal Gift A unique and engaging holiday countdown calendar that combines science and play. Specifications: Size: 21 x 16 cm Weight: 400g Material: Natural crystal stones Package Includes: 1 x Crystal and Stone Collection Set (24 Grids)