Search  for anything...
NATIONAL GEOGRAPHIC

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

    • Based on 24,133 reviews
Condition: New
Checking for product changes
$47.49 Why this price?
Save $22.49 was $69.98

Buy Now, Pay Later

As low as $7.92 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives May 6 – May 8
Order within 19 hours and 17 minutes
Available payment plans shown during checkout

Style: Hobby Kit


Features

  • 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.
  • A TUMBLER THAT'S MADE TO LAST Our high-quality tumblers are made with a durable motor thats 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!
  • 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.
  • 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!

Product Dimensions: 13.81 x 4.88 x 8.06 inches


Item Weight: 5.51 pounds


Country of Origin: China


Item model number: NGHOBBYTUMBLER


Manufacturer recommended age: 8 years and up


Is Discontinued By Manufacturer: No


Release date: August 7, 2017


Department: girls


Manufacturer: JMW Sales, Inc


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 6 – May 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Klarna Pay in 4
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Genuine review after fully using it!
Are you wondering if it works well? It does! Any problems? None! Results? Incredible, I was truly shocked! Pros: Almost no assembly, at all. Extremely easy to understand the directions (Tumbling time will vary depending on the rocks. Don't let it scare you away when it says one phase should tumble for 6-8 days (I haven't had to tumble any that long! The longest has been 3 days). That being said, an extremely hard rock that's very jagged may need more time. Using the rocks they include, or your own collection of crystals/gemstones is a great route. A plain piece of gravel or a rock of that type is very hard and dense and may take more time (who wants polished gravel anyway though?) Extended project to do with children, lots of engagement. Because their are 4 different grit types with different purposes, the children get to return to their project, dump the rocks and check on the progress and start a new phase. It's a great opportunity to teach to teach about erosion, and show / explain what a rock looks like through millions of years of erosion and then further explain how incredible it is that we are doing this project together that mimics what nature does, we are polishing these rocks in a few weeks that takes millions of years to do in nature! It's a wonderful learning opportunity for children, as well as an extremely engaging project that although it may take quite some time for it to finish, the ongoing project itself is what makes it fun. Returning to the rocks and seeing the progress, (we actually started taking pictures each time we open it so then we can look back on the pictures and see how the rocks have changed!). I cannot say enough how great of a project this is for children to get them excited about science! Personally, I find this to be very satisfying regardless of children. This would be an extremely fun hobby for an adult as well, the above is not to say that this is a children only experience. Use or find or buy your own natural gemstones or softer rocks (look in River beds if you can!). Tumble them, polish them, and then make your jewelry or just save them to display. It's quite a satisfying feeling to see the project from beginning to end, and to know that the beautiful smooth shiny rocks were not store-bought, but that you did this with that with this machine! Cons: I've been through the tumbling process in full, twice now. I honestly cannot think of any cons at this point. It's not to say that no one has had issues, but the machine I received functions perfectly and I have had no issues with leaks or ill-fitting pieces, tearing of the belt or anything of this nature. I did take a very small amount of oil on my fingertip and lightly rub it on the belt to keep it lubricated, with the constant friction I could see how the belt can eventually wear down just like any other belt of this nature whether it's in a car or in a fan. So, keeping it very slightly lubricated will help with the health of the band. Should it break, the kid includes an extra belt and it is incredibly easy to repair, the belt is divisible and an outside piece of the equipment you simply take one off and put the other on there is no sophisticated way of connecting the belt, it is truly something my six-year-old could do with almost no instruction, so an adult will have zero issues with that! If you are interested in rock tumbling, or you just want a very fun project for your children to stimulate their interest in science or to just keep them busy using their imaginations (regarding the possibilities of what to do with the rocks, and imagining whether it will look like and the brilliant colors!) - then this is absolutely a perfect kit to start with. DO: Make sure to not put too many rocks. I've never filled mine more than one third of the way, and I wouldn't recommend doing more than that. The amount of rocks you can tumble at a time will vary depending on the size, but I also recommend not doing anything smaller than a dime because during the tumbling process it could crack and chip. I would also recommend not doing anything larger than a half dollar as well (height and width, and that'd be on the largest size). Remember, this is just the hobby edition. I do have to say though, the results are quite sophisticated for just a hobby edition! All in all, it's an excellent piece of equipment to buy if you're interested in rock tumbling but are unsure if you would stick to it or are not ready to spend a few hundred dollars on a professional Tumbler. ** I did read a few comments about the machine leaking, I have not had this problem at any point. Make sure you are putting on the inner lid correctly, as well as the top lid, then turning the black lid securing piece as tightly as possible. If you do end up having problems, I highly recommend exchanging instead of giving up, because I really have seen that it works and I just want everyone who wants to try this to have the experience I've had! It's been great fun. Wonderful purchase, no regrets! ... show more
Reviewed in the United States on May 26, 2023 by Marie
    • Prefect for our 7-year-old
Review Image by B. Diaz B. Diaz
Review Image by B. Diaz B. Diaz
Review Image by B. Diaz B. Diaz
Review Image by B. Diaz B. Diaz
**updated review below--- we got shiny rocks!** We bought this for our son as a 7th birthday gift. It's the perfect mid-range rock tumbler! It's sturdy and doesn't seem like it will break. It's been running now for over 2 weeks. It's definitely not silent, but with its rubber barrel, I suspect it's tougher and quieter than one with a plastic barrel. We keep it in the basement, but can see it'd be annoying if it was somewhere in the house. It has a handy feature where you can set it for up to 7 days and it'll tell you how many days are left- great for a kid! It includes a nice little instruction manual with information about the history of rock tumbling and description of the rocks included. It's a nice, reasonably-priced kit that includes everything you need to start tumbling rocks right away! Update: now that we've completed a batch, I figured I'd add some info. We still think it's a nice kit! The little sieve that comes with the kit is very handy! Our final stones were smooth and lovely. However, they weren't really shiny. After some reading, we learned that there is a bit of an art to this and we need to be a little more meticulous in the cleaning of the tumbler between grits. Overall, though, our 7-year-old is quite pleased with the kit. We bought the jasper set and will try that next! Update #2-- SHINY ROCKS! We did a few batches and couldn't get shiny rocks and we lost interest. My kiddo is now almost 9 but just started becoming interested in geology a lot more. We decided to try again. After reading some about it, I decided to try a better brand of grit and IT WORKED! We bought Rock Tumbler Grit for 3 Pound Tumbler by Professional Grade Rock Polishing Grit And followed the instructions **carefully,** making sure to clean the tumbler tub very meticulously after each tumble. We also purchased tumbling pellets (Rock Tumbler "Sinking" Plastic Pellets / Beads Used For Final Polishing & Burnishing Stages) for the final two stages. The new grit had an additional stage which made all the difference. The jade set came out mostly lovely and shiny. They were not all consistently shiny, but I see promise! I added a picture using the flash to show off the polish. We're going to try the nee grit with a different set of stones now. ... show more
Reviewed in the United States on November 2, 2016 by B. Diaz B. Diaz
    • Fun and satisfying
It's a good toll for teaching our kids patients and having patients pay off while collecting really amazing rocks. And getting to see the changes. The unit it self is very simple and sturdy. Works well and has been running almost non stop since Christmas. Still working good.
Reviewed in the United States on February 3, 2024 by Russell Gibson
    • Timer light issue
The timer light no longer worked after 4 weeks (it remained on day 1 and would not change) and the motor would stop every 2 days. But my grandson LOVES it.
Reviewed in the United States on January 27, 2024 by Nicky Simpson
    • Works great!
Review Image by Terri Terri
Review Image by Terri Terri
Review Image by Terri Terri
I love this tumbler! So easy to use, pic #1 was tumbled for 6 weeks total and belt still great! Pic #2&3 are before and then after 1st tumble, 💜 So much so that when it when on sale I purchased 2 more 😁. I can tumble more rocks at different stages now! Has everything you need to get started! Go for it, is great fun! ... show more
Reviewed in the United States on January 7, 2024 by Terri Terri
    • Awesome but so loud!
We love this thing! Be prepared to find it a home in a garage or a basement space where the noise will not disturb your regular life. It is so easy to use but I recommend buying the larger containers of the 4 grits you will need (sold separately) it only comes with enough grit for one full run of steps 1-4. Each step is a few days long so this is not a quick process. We used the rocks that came with it to start but are looking forward to seeing how some local rocks process. ... show more
Reviewed in the United States on January 12, 2024 by starryeyed
    • So far, it's a good product
Review Image by vwilly vwilly
Review Image by vwilly vwilly
Review Image by vwilly vwilly
My 7yo was estactic to get this. The rocks that came with it were beautiful raw. They became more beautiful in the water. It is a good mix of things for her collection. Instructions were in multiple languages, they were clear and easy to follow. She was able to get the tumbler figured out, filled, and going all by herself. It is definitely quieter than other tumblers. It is not an annoying clunking sound, but a smooth consistent sound. It's great that it has the set features, so you can set the number of days it should run, and then just leave it. We just started using it 2.16.24, so we may have more to say a few months down the road. ... show more
Reviewed in the United States on February 18, 2024 by vwilly vwilly

Can't find a product?

Find it on Amazon first, then paste the link below.