The crystal advent calendar set contains 23 incredible rocks, gems, crystals, ores, an amethyst necklace, and a magnifying glass to see the details of the rocks, a storage pouch.With the 24-day christmas countdown calendar, each day is a different rock, a different surprise every day until Christmas arrives, and enjoy the fun all year long!The rock advent calendar set comes with a professional instruction sheet printed on the inside of the box, which will allow children as well as adults to better explore and understand the fossils, rocks, and crystals inside.Rock and mineral collecting is a popular hobby, and this rock collection kit is the perfect way to inspire a lasting love of geology for kids, and teach them about the fossils, rocks and crystals inside!This is a great Christmas gift option for educational purposes, learning toys or rewards. advent calendar 2025 Ideal as a Christmas, birthday, party gift, school prize, Christmas stocking filler, a great gift for mineralogy and geology enthusiasts.