Reveal a New Gem Daily - As Christmas approaches in December, kids can open a gorgeous new gem each day to add to their collection! A collector's bag is included to keep all the gems safe.Collect 24 Stunning Gems - This advent calendar features beautifully polished gemstones for kids, including agate, green aventurine, hematite, sodalite, green calcite, tiger's eye, blue calcite, and more!Dig Up a Special Crystal on the Last Day - The final gem in the collection is a stunning rose quartz, which kids can dig out from a mini digging brick, just like real geologists!Create Unique Jewelry - This Christmas advent calendar includes five jewelry settings so kids can create their own jewelry with new gemstones! This calendar will bring fun all year long!High-Quality Educational Toys - We pride ourselves on creating the highest-quality, hands-on science toys and back all our products with exceptional service. If you have a negative experience, please let us know and we'll be happy to make it right!