Includes a collector's pouch to keep all your gems safe. REVEAL A NEW GEM EACH DAY - Each day of December as Christmas approaches, kids can open a gorgeous new gemstone to add to their collection! COLLECT 24 STUNNING GEMS - The beautiful, polished gemstones for kids in this advent calendar include agate, green aventurine, hematite, sodalite, turquenite, tiger's eye, blue calcite and more!