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NATIONAL GEOGRAPHIC Starter Rock Tumbler Kit - Durable Leak-Proof Rock Polisher for Kids - Complete Rock Tumbling Kit - Geology Hobby Science Kit, Rocks & Crystals for Kids (Amazon Exclusive)

4.4 4.4 out of 5 stars 9,969 ratings
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Purchase options and add-ons

Size 1 Count (Pack of 1)
Brand NATIONAL GEOGRAPHIC
Theme science
Age Range (Description) Kid
Item Dimensions LxWxH 7.5 x 11 x 9 inches

About this item

  • CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This starter rock tumbler makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
  • A TUMBLER THAT'S MADE TO LAST - The durable motor allows you to tumble multiple batches of rocks. An improved, leak-proof barrel is lined with rubber for quieter operation while tumbling on the sturdy tumbler base.
  • ALL-IN-ONE TUMBLING KIT - This kit has everything you need and then some! You get ½ a pound of rough rocks with nine different types of gemstones inside, five jewelry fastenings, and our four-stage rock polishing grit.
  • EASY TO USE AND EDUCATIONAL - Detailed tumbler instructions lead you step-by-step through the rock tumbling process, A full-color learning guide details how rocks are naturally polished and has fascinating facts about the gemstones in the kit.
  • HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!

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NATIONAL GEOGRAPHIC Starter Rock Tumbler Kit - Durable Leak-Proof Rock Polisher for Kids - Complete Rock Tumbling Kit - Geology Hobby Science Kit, Rocks & Crystals for Kids (Amazon Exclusive)


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Important information

Safety Information

choking hazard - small parts - not suitable for children under 3 years


From the brand


Product Description

National Geographic Starter Rock Tumbler Kit

Dive into the exciting hobby of rock tumbling with this complete starter kit that includes a tumbler, ½ pound of rough rocks with 9 types of gems, 5 jewelry fastenings & 4-stage rock polishing grit.

Kick off a fun new hobby with the National Geographic Starter Rock Tumbler Kit!

This kit has all the features and accessories you’ll need to transform rough rocks into extraordinary gemstones, start an awesome rock collection, and create beautiful jewelry.

This high-quality tumbling machine boasts a powerful motor that will last for years, as well as an upgraded leak-proof, rubber-lined barrel. Plus, everything is included to get started: a 1/2 pound of assorted stones from around the world, 4 stages of polishing media, and five jewelry fastenings to you can create your own unique wearables with your tumbled gems.

This high-quality beginner tumbler makes rock tumbling easy for kids and adults, with detailed, easy-to-follow instructions that will have you successfully tumbling in no time!

The rough rocks provided (½ lb.) contain nine different gemstones from around the world, and our tumbling grit is labeled by tumbling stage to make the process even easier! Choose your favorite gems and turn them into jewelry with the included necklace, key chain, ring, and two clip-on earring fastenings inside.

This is a great way to inspire a love of a hobby that can last a lifetime! Plus, kids are astounded by the transformation they'll see once rocks are fully polished! It's also a fantastic STEM toy thanks to the detailed Learning Guide, where kids can learn how rocks are smoothed and polished over time in nature. They'll also discover fascinating facts about all the gemstones in the kit!

We make the highest quality hands-on science toys, and all products are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations.

Premium rock tumblers for hobbyists and professionals by National Geographic
Father and daughter explore rock tumbling.

High-Quality Rock Tumblers for Every Level of Tumbling Enthusiast!

national geographic hobby rock tumbler kit tumbling polishing stones gemstones gems

Starter Rock Tumbler Kit

national geographic hobby rock tumbler kit tumbling polishing stones gemstones gems

Hobby Rock Tumbler Kit

national geographic professional rock tumbler kit tumbling polishing stones gemstones gems

Professional Rock Tumbler Kit

Skill Level

Beginner

Skill Level

Hobby

Skill Level

Advanced

Capacity

1 lb.

Capacity

2 lb.

Capacity

3 lb.

Controls

Plug in to Tumble

Controls

7-day Programmable Timer

Controls

Speed Control and Programmable Timer

Rough Gemstones Included

1/2 lb. Rocks

Rough Gemstones Included

1/2 lb. Rocks

Rough Gemstones Included

3 lb. Rocks

Extras

Patented GemFoam included for a shinier finish.

Rock refill kits are available for even more tumbling possibilities!
national geographic science toys stem kits for kids

What's in the box

  • Rock Tumbler
  • Leak-proof, Rubber-lined Tumbler Barrel
  • ½ Pound of Stones
  • Four Levels of Grit
  • 5 Jewelry Fastenings
  • Looking for specific info?

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    9,970 global ratings
    Really fun and great for kids of all ages!
    4 Stars
    Really fun and great for kids of all ages!
    My second grade students became interested in rock tumbling this year after another student brought in their collection. Soon they started collecting rocks on the playground. I knew I had to capitalize on their excitement, so I found this kid friendly rock tumbler.First things first, it is AMAZING. It comes with everything you need, including cool rocks ready to tumble, although you’ll probably need to restock the grinding powders if you’re going to do multiple sets like we have.A few things to note:It is hard to open and close. Have someone strong on hand to do it, because I struggle to do it myself.It is LOUD. I mean, it’s rocks tumbling in a jar. Of course it’s loud. But find someplace to set it up near a plug because it’s going to be distracting otherwise. In the classroom, we stuffed it in a cabinet - still made noise but muffled it enough that we could still focus. At home, we did it on the back porch. I’m sure the neighbors could hear it on quiet nights, but oh well. As long as you muffle it, it’ll sound like a white noise.Last but not least, this process takes a lot of TIME! About a month from start to finish. Be patient. The good news is that aside from opening it, filling it, and plugging it in, there’s minimal upkeep. You just leave it alone and let the tumbler do its job. Opening it every week was the highlight of our week. The process is so cool even after just the first cycle. It’s so worth the time it takes.Don’t drain it in your sinks. The gunk will mess up your pipes. After the last cycle, the rocks won’t be fully polished. We bought some mineral oil and polished them ourselves for a nice sheen. Worth the additional extra few bucks.After school let out, I brought it home to do it again with my toddlers. They loved it just as much as the big kids.I would recommend this to any future geologist in the making!
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    Top reviews from the United States

    Reviewed in the United States on March 8, 2024
    Reviewed in the United States on June 23, 2023
    2 people found this helpful
    Report
    Reviewed in the United States on July 4, 2023
    Customer image
    4.0 out of 5 stars Really fun and great for kids of all ages!
    Reviewed in the United States on July 4, 2023
    My second grade students became interested in rock tumbling this year after another student brought in their collection. Soon they started collecting rocks on the playground. I knew I had to capitalize on their excitement, so I found this kid friendly rock tumbler.

    First things first, it is AMAZING. It comes with everything you need, including cool rocks ready to tumble, although you’ll probably need to restock the grinding powders if you’re going to do multiple sets like we have.

    A few things to note:
    It is hard to open and close. Have someone strong on hand to do it, because I struggle to do it myself.

    It is LOUD. I mean, it’s rocks tumbling in a jar. Of course it’s loud. But find someplace to set it up near a plug because it’s going to be distracting otherwise. In the classroom, we stuffed it in a cabinet - still made noise but muffled it enough that we could still focus. At home, we did it on the back porch. I’m sure the neighbors could hear it on quiet nights, but oh well. As long as you muffle it, it’ll sound like a white noise.

    Last but not least, this process takes a lot of TIME! About a month from start to finish. Be patient. The good news is that aside from opening it, filling it, and plugging it in, there’s minimal upkeep. You just leave it alone and let the tumbler do its job. Opening it every week was the highlight of our week. The process is so cool even after just the first cycle. It’s so worth the time it takes.

    Don’t drain it in your sinks. The gunk will mess up your pipes. After the last cycle, the rocks won’t be fully polished. We bought some mineral oil and polished them ourselves for a nice sheen. Worth the additional extra few bucks.

    After school let out, I brought it home to do it again with my toddlers. They loved it just as much as the big kids.

    I would recommend this to any future geologist in the making!
    Images in this review
    Customer image Customer image Customer image
    Customer imageCustomer imageCustomer image
    52 people found this helpful
    Report
    Reviewed in the United States on February 25, 2024
    Reviewed in the United States on February 10, 2024
    6 people found this helpful
    Report
    Reviewed in the United States on October 31, 2020
    25 people found this helpful
    Report
    Reviewed in the United States on February 9, 2024
    Reviewed in the United States on January 21, 2024

    Top reviews from other countries

    Translate all reviews to English
    Cliente de Amazon
    5.0 out of 5 stars Excelente para principiantes
    Reviewed in Mexico on January 18, 2024
    Justine
    5.0 out of 5 stars Great but pretty loud😂
    Reviewed in Canada on January 12, 2024
    Elena Beaumont
    5.0 out of 5 stars Brilliant
    Reviewed in the United Kingdom on January 6, 2024
    Sandra Österlund
    3.0 out of 5 stars quite noisy, dont follow the instructions
    Reviewed in Sweden on December 26, 2023
    S. H.
    1.0 out of 5 stars Scam (do not buy this product)
    Reviewed in the Netherlands on September 6, 2022