Package include:1 stone storage gift box (24 stones). This advent calendar is made of high-quality, safe, non-toxic materials, is safe, durable and light. It is an excellent gift for girls and boys. Christmas Countdown:Open the small door and reveal the surprise rock. Every day from December to Christmas is an interesting experience. Christmas countdown is an exciting time for kids. Using a countdown calendar is a way to increase holiday expectations. A Special Gemstone For Everyone:Every kid will find their own special birthstone in this gemstone dig kit! White agate, Amethyst, Strawberry crystal, Sunstone, Garnet, Fluorite, Graptolite, Aventurine and red agate are all hidden within. Interesting Christmas Calendar:24 types of rocks, gems, minerals specimens with different colors/shapes, bring different surprises every day. This series provides children with high-quality educational toys, teach them about the fossils, rocks and crystals. A Hobby That Lasts A Lifetime:Rock and mineral collecting is a popular hobby, and this rock collection kit is the perfect way to inspire a lasting love of geology! This geology kit will soon be your kid's most prized possession!