Features: 1. **Exciting Surprise Element**: Each of the 24 mineral blind boxes contains a unique ore or crystal, providing a delightful surprise for kids as they explore the magical world of mining. Perfect for building anticipation during the holiday season! 2. **Educational and Fun**: This Advent calendar not only offers fun but also educates children about different minerals and crystals, sparking their curiosity and interest in geology and nature. 3. **High-Quality Materials**: Made from safe, non-toxic materials, our mineral blind boxes feature beautiful, vibrant colors and transparent crystals that are visually appealing and safe for kids to handle. 4. **Perfect Holiday Gift**: Ideal for Christmas, this Advent calendar makes a thoughtful gift for children, encouraging sharing and excitement as they reveal each day's surprise. Great for family bonding and festive fun! 5. **Collectible Pendants**: With 24 different pendants to collect, kids can trade and share their finds with friends and family, making it a fantastic way to enhance social interaction and creativity. Our Christmas Advent calendar mineral blind box contains ores. It can be transparent crystal moist, beautiful color; Explore the magical world of miners. The way to use it is very simple: open any binding box according to your personal preference and enjoy the surprise fun of drawing the binding box. 24 different pendants to surprise friends and family.