Ultimate Specimen Collection--- The unique 2022 Crystal Advent Calendar is the perfect standalone collection or addition to any child's specimen collection, including 24 rough and polished ore specimens. Be a great gift for boys and girls. DIY necklace with your kids---Include an amethyst necklace, Ancient Egyptians worked amethysts into amulets as a form of prayer and protection from harm. It is said that wearing an amethyst necklace could bring luck and energy. For other crystals, many people use them for meditation, yoga, healing specific chakras and other uses. Crystal Treasure Hunt---the advent calendar is also a great way to teach kids about numbers, time concepts, and the art of patience. Unlock unique mineral deposits or beautiful crystals and explore the field of geological science. It is colorful and interesting enough for children, their families and enthusiasts.Interesting Christmas Calendar---24 rock specimen advent calendars with 24 holes (can contain the same stones or stones not shown in the picture), with different surprises every day, forming a permanent attraction for children. Perfect gift---Kids and adults alike love the gift of a crystal advent calendar. Note: Inedible. Do not put it in your mouth, children under 3 years are not suitable for use