1. [24 Days of Christmas Countdown Fun]: This natural rock crystal advent calendar offers a unique and educational way to count down to Christmas. Each day from December 1st to 24th, kids can discover a new gemstone, making the holiday season exciting and memorable. Comes with a collection bag, magnifying glass, and two stone necklaces for added enjoyment. 2. [Variety of Natural Crystal Gemstones]: Featuring a selection of genuine stones such as Tiger's Eye, Amethyst, Magnesite, Volcanic Rock, Sunstone, Red Jasper, and Citrine, this advent calendar is perfect for young geologists and collectors. Each gemstone comes with detailed information to spark curiosity and learning. 3. [Geology Learning & Exploration Kit]: Designed to inspire a love for earth science, this rock advent calendar encourages kids to explore geology through hands-on discovery. Its an engaging STEM educational tool that helps develop patience, observation skills, and a deeper appreciation for nature. 4. [DIY Jewelry & Decorative Use]: Turn your favorite gemstones into personalized accessories! allowing kids and adults to create unique jewelry. These crystals can also be used as decorative for home or craft projects. 5. [Perfect Christmas Gift for All Ages]: Packaged in a beautifully designed box, this 2025 advent calendar makes a thoughtful and educational Christmas gift for kids, teens, and adults aged 5 and up. Ideal for holiday stockings, classroom rewards, or as a special present for gemstone enthusiasts. Material: Stone Color: Assorted Product size: 21.5 x 14.7 x 3 cm / 8.5 x 5.8 x 1.2" Package list: Stone x2