1. Christmas countdown is an exciting time for kids. Using a countdown calendar is a way to increase holiday expectations.2. The advent calendar is a amazing Christmas gift, 24 days, every single day there will be new surprises.3. This advent calendar is made of high-quality, safe, non-toxic materials, suitable for adults and children over 3 years old.4. This toy can keep your child away from electronic products, reduce stress and you can also practice numbers and counting skills with kids.5. And with rock collection set for kids and surprise your little geologist that will spark your kid's curiosity and love for science and geology.6. This is an ideal Christmas gift for children over 3 years older. Great science gift for mineralogy and geology enthusiasts.Condition100% Brand New & High Quality MaterialPaper+Stone ColorMulticolor 24 grid ore gift box size: 21*16.4*5cm Description*24 Grid Christmas Style Ore Blind Box*Explore the magical miner world*Each grid is a surprise*Each grid is different*Every gem here is different*Natural selection,so as like as two peas,there are no two stones*Transparent crystal moist luster gorgeous color