









Price: $29.99 - $17.99
(as of Dec 01, 2025 16:15:34 UTC – Details)
From the brand

Holiday Favorites
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Dig Kits

Your purchase has purpose!
Every purchase helps support the global nonprofit National Geographic Society in its work to protect and illuminate our world through exploration, research, and education.
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! Includes a collector’s pouch to keep all your gems safe.
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!
DIG OUT A SPECIAL CRYSTAL ON THE FINAL DAY – The final piece in this collection is stunning rose quartz that kids unearth from a mini dig brick, just like a real geologist!
CREATE UNIQUE JEWELRY – This Christmas advent calendar includes five jewelry settings so kids can create their own special jewelry with their new gemstones! This calendar brings joy all year long!
AWARD-WINNING PRODUCTS – Blue Marble, winner of the Toy Association’s prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!
Customers say
Customers find this advent calendar to be a well-loved present that’s fun to use and count down to Christmas, with pretty stones and a good variety of gems. They appreciate its educational value as a gift for kids, and one customer notes it’s particularly enjoyable for many ages. The size and value for money receive mixed feedback – while some find the rocks good-sized and worth the price, others say they’re smaller than expected and not worth the cost. The rock content also gets mixed reviews, with some loving rocks and gems while others note the stones aren’t properly identified.