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Best rocks - Holiday Sale 2025

Last Updated - December 24, 2025

1
Best Choice
26% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Blue Marble
26% Off

National Geographic Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

Blue Marble

$47.99

$64.99
(26% Off)

More Details
Main highlights
- EASY TO USE – Simple instructions and one-touch settings make rock tumbling fun and easy. Control the number of days for each tumbling cycle with the one-touch timer and automatic shutoff feature, set it and forget it! This is a great gift for kids.
- CREATE YOUR OWN GEMSTONES - Make any stone sparkle and polish everyday rocks into dazzling gemstones! This rock tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
- 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!
- A TUMBLER THAT'S MADE TO LAST – Our high-quality tumblers are made with a durable motor that’s designed to last for years. The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. An excellent STEM activity for kids.
- A COMPLETE HOBBY TUMBLING KIT - Everything you need to create polished gemstones: the tumbler, four polishing grits, sifter, nine types of real rough gemstones, plus a detailed full-color learning guide. Makes a great gift for girls and boys!
$47.99
$64.99 (26% Off)
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Blue Marble

National Geographic Break Open 5 Jumbo Geodes - Earth Science Kit with 5 Premium, Extra-Large Geodes with Crystals, Goggles & Display Stands, Science Gifts, Fun Stuff for Kids (Amazon Exclusive)

Blue Marble

$39.99

More Details
Main highlights
- HIGH-QUALITY EDUCATIONAL TOYS - National Geographic is proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is anything less than extraordinary, we'll make it right!
- FULL-COLOR LEARNING GUIDE - Learn about the fascinating science behind how geodes are formed in the full-color Learning Guide. National Geographic educational toys make science and learning fun!
- DISPLAY YOUR TREASURE - Use the 3 included display stands to display your favorite crystals and geodes. A magnifying glass is also included to explore the inside of your geodes in detail.
- BIG GEODES WITH CRYSTALS - This super-fun science kit includes 5 jumbo, uncracked geodes to break open at home! Each geode is as big as a tennis ball with incredible crystals inside!
- 100% NATURAL GEODES – Kids will love the thrill of cracking open these 100% natural specimens and examining the natural beauty inside. This STEM activity emphasizes fun & discovery in a hands-on way!
$39.99
3
Best Value
44% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

National Geographic
44% Off

National Geographic Rock Collection Box for Kids – 300+ Piece Gemstones and Crystals Set Includes Geodes and Real Crystals, Rocks and Minerals, Science Kit for Kids, A Geology Gift for Boys and Girls

National Geographic

$14.98

$26.99
(44% Off)

More Details
Main highlights
- IDENTIFY & EXPLORE – Learn to recognize amethyst, pyrite, rose quartz, tiger’s eye, and more with the help of the full-color Learning Guide and included magnifying glass.
- HUNDREDS OF EXOTIC ROCKS – This rock collection includes amethyst, aventurine, blue calcite, blue quartz, dalmatian jasper, desert rose, fluorite, hematite, pumice, red jasper, quartz point, selenite, snowflake obsidian, sodalite, and tiger’s eye.
- DISPLAY, SHARE & STORE YOUR COLLECTION – Safely store your collection in the included storage bag and use the magnifying glass to examine your favorite specimens up close.
- DISCOVER CRYSTAL TREASURE – Crack open two premium geodes to reveal dazzling crystal interiors—an unforgettable hands-on geology experience for kids.
- 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!
- A MASSIVE ROCK COLLECTION – A perfect standalone kit or expansion to any rock collection! Includes over 300 genuine rock, mineral, and crystal specimens from around the world.
$14.98
$26.99 (44% Off)
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Blue Marble

National Geographic Break Open 10 Premium Geodes – Includes Goggles & 2 Display Stands - Great STEM Science Kit, Geology Gift for Kids, Break Your Own Geodes with Crystals

Blue Marble

$31.99

More Details
Main highlights
- DISCOVER CRYSTAL TREASURE - Break open these rocks to reveal amazing crystals inside! Geology doesn’t get more exciting than breaking open rocks and finding crystal treasures. This great STEM activity makes an excellent gift for girls and boys!
- COLORFUL VARIETY – Geodes can form with a wide variety of crystals inside. These geodes have been hand-selected to bring you the best variety available.
- 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!
- 16 PAGE FULL-COLOR LEARNING GUIDE – You’ll learn all about the fascinating science behind how geodes are formed in the detailed, full-color Learning Guide. National Geographic educational toys make science and learning fun, and are the perfect STEM gifts for boys and girls!
- 100% NATURAL GEODES – These real specimens may be as big as a tennis ball, or as small as a ping-pong ball. Kids will love the thrill of cracking them open to see the natural beauty inside. This STEM activity emphasizes fun and discovery!
$31.99
5
39% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Blue Marble
39% Off

National Geographic Gemstone Dig Kit – Dig Up 10 Real Gemstones and Crystals, Science Kit for Kids, Gem Digging Kit, Gift for Girls and Boys, Mining Kit, Rock Collection

Blue Marble

$9.79

$15.99
(39% Off)

More Details
Main highlights
- START A ROCK COLLECTION - The Super Gemstone Dig Brick is the most fun way to get kids started with a rock collection! This hands-on science kit promotes the wonder of discovery as kids dig out their gems, and can inspire a love of earth science.
- IDENTIFY EACH GEMSTONE - A full-color identification sheet is included so kids can quickly and easily spot each gem in their new rock collection. The sheet also contains fascinating facts about each gemstone in the dig brick.
- EXCAVATE 10 GENUINE GEMS - This excavation science kit has 10 real gems for kids to dig out like a real geologist: amethyst, geode, pyrite, rose quartz, gray agate, green aventurine, green fluorite, snowflake obsidian, sodalite & tiger's eye.
- DIG WITH THE INCLUDED TOOLS - Just like a real geologist, kids can use the included tools to excavate their gems! Includes an excavation tool and brush for digging, and a magnifying glass to view the natural beauty of each stone in detail.
- 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!
$9.79
$15.99 (39% Off)

Best rocks - Holiday Sale 2025

National Geographic Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

National Geographic Break Open 5 Jumbo Geodes - Earth Science Kit with 5 Premium, Extra-Large Geodes with Crystals, Goggles & Display Stands, Science Gifts, Fun Stuff for Kids (Amazon Exclusive)

National Geographic Rock Collection Box for Kids – 300+ Piece Gemstones and Crystals Set Includes Geodes and Real Crystals, Rocks and Minerals, Science Kit for Kids, A Geology Gift for Boys and Girls

National Geographic Break Open 10 Premium Geodes – Includes Goggles & 2 Display Stands - Great STEM Science Kit, Geology Gift for Kids, Break Your Own Geodes with Crystals

National Geographic Gemstone Dig Kit – Dig Up 10 Real Gemstones and Crystals, Science Kit for Kids, Gem Digging Kit, Gift for Girls and Boys, Mining Kit, Rock Collection

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