NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit - Complete Rock Tumbler for Adults & Kids with Durable 2 Lb. Barrel, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Rock Polisher
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This item is eligible for return within 30 days of receipt
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Availability:
Only 5 left in stock, order soon!
Arrives
Saturday, Aug 16
Edition: Pro 3 with GemFoam
Features
- CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This professional 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 has time and speed control settings so you can set it and forget it. An improved leak-proof, 2 lb. barrel features a stainless-steel lid and is 75% quieter overall than plastic tumbler barrels.
- INCLUDES 1 LB. OF ROCKS & MORE - This tumbling kit comes with everything you need: 1 lb. of raw rocks with 9 types of gemstones, 5 jewelry fastenings, grit, strainer & GemFoam for a dazzling shine!
- USE GEMFOAM FOR DAZZLING RESULTS - This rock tumbler kit stands apart from others thanks to our new, reusable GemFoam rock polisher! Add GemFoam and water to the barrel after your final tumbling stage and your gems will have incredible shine!
- HIGH-QUALITY EDUCATIONAL TOYS - We proudly make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience isn't stellar, we'll make it right!
Product Dimensions: 12.6 x 6.69 x 10.24 inches
Item Weight: 6.69 pounds
Country of Origin: China
Item model number: NGPROTUMBLER3
Manufacturer recommended age: 8 years and up
Release date: July 3, 2023
Language: English
Manufacturer: JMW Sales, Inc.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Aug 16
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Edition: Professional
This is my first rock tumbler ever so please take that into consideration. I had it in my "saved for later" until I saw it on sale. It took me a while to do this review because I wanted a successful batch first. It's small which is perfect for my small (crafting/beading/jewelry making/lapidary) workspace. I live in a tiny one-bedroom studio apartment. I was expecting the noise to wake the neighbors; however, it is very quiet..I believe it's due to the rubber barrel. (I'm one that has ran dishwashers at night to help me sleep...so I actually like the constant sound.) No noise complaints so far..lol. After running the small batch of rocks that came with it...using the sample grits & polish that also were included, I read many reviews & did a lot of YouTube-ing as the rocks never got shiny. I found that National Geographic brand tumblers are good, but the grit/polish...not so much. On my second try, using silicon carbide grits & aluminum oxide polish, (I couldn't find any information about what kind the Nat Geo was) the stones & gems came out nice & shiny. So you may want to spend a little more to get better results. I do use the National Geographic brand ceramic media & have been pleased with it. I only run it on level 1 speed as, according to my research, most comparable models/brands have a slower rotation speed than this National Geographic one on level 1. The included instructions are clear & helpful & will tell you running times & speeds to use. If you purchase another brand of grit/polish, it may also come with instructions regarding running times & such. The settings on this tumbler are very simple & easy to use. I'm very happy with my National Geographic rock tumbler & would recommend it.
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Reviewed in the United States on August 10, 2023 by MSmom MSmom
Edition: Pro 3 with GemFoam
My 7 year old loves this, it was easy to do and worked perfectly. It only comes with 1 pack of tumbling supplies and it's loud. We set it up in the garage so the noise wasn't ever an issue and we plan to buy more tumbling gravel
Reviewed in the United States on March 11, 2025 by Julie Brummett
Edition: Pro 3 with GemFoam
The media could not be loaded. I just got this rock tumbler kit today, and so far I am very pleased with it! It is quiet, and doesn't take up too much space, and it comes with rocks to tumble, a jewelry-making kit, an extra pully band, foam and grit, and a nice booklet on the rocks included with the tumbler. A very nice little kit from Nat Geo, for a good price! It definitely does not come with enough grit though. I purchased additional 120 grit aluminum oxide to use with for my future rock tumbling. I might get a different grade of grit later, but to start out 120 aluminum oxide seemed most likely to give my rocks the best shine, without grinding them into dust. I can also say that the wheel looks a bit wiggly, but it doesn't seem to hinder the machine at all. I am trying an experiment right now where I soak my rocks for 24 hours prior to tumbling them, and then I am going to add just a bit of mineral oil to the water, grit and foam. I am testing my rocks in; vinegar, mineral oil and water/ mineral oil and water/ water. I will update this review of the results, after I have results to post. UPDATE: DO NOT USE DARK COLORED/BLACK GRIT/SAND/POWDER WITH LIGHT COLORED STONES! It grinds into the stones, and changes their color, based on the grit/powered/sand you're using! After 3 days of tumbling to each batch of stones, these are my results: - The vinegar, mineral oil and water mix: Shined and cleaned the rocks, and seemed to soften them, creating a visible effect in their polish. - The mineral oil and water: Also shined the stones, and seemed to soften them, without much difference in their cleanliness, and added a visible effect in their polish. - Water: Did not soften or clean the stones, and had less of an effect on their polish. OVERALL RESULTS OF EXPERIMENT: I think pre-soaking the stones in mineral oil and vinegar had the most noticeable effect on the stones polish. They seem to soften in the mineral oil, and the vinegar does get them clean pre-polish. I also tried tumbling the stones in mineral oil and water, with the aluminum oxide powder, and found that the dark colored powder ground into the stones, specifically the Tigers Eye. ...Which is NOT the result I wanted. Upon further experimentation and research, I have decided to use clean/white sand and colored sand as grit, to see if those work better as a polishing medium than the aluminum oxide. If my theory is correct, pre-soaking the stones in mineral oil and vinegar and then tumbling with the color sands should grind the sand color of my choice into the rocks. Will update later with pictures, if/when possible. So far, it's a going well and I'm having fun experimenting with geology! Yay, shiny rocks! Thanks Nat Geo!
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Reviewed in the United States on November 9, 2023 by Lena Boyce Lena Boyce
Edition: Professional
Why did you pick this product vs others?: Oh what a great and fun gift for a child. Purchased this tumbler for my grandson who loved rocks, and it was a hit. The price for value definitely worth it. It is a quality tumbler for first time lapidary interest. Of course it's a bit noisy when it's tumbling and full of rocks. My grandson had and still is having a lot of fun seeing his dirty rocks turning into shiny stones.
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Reviewed in the United States on June 20, 2025 by Gnomegirl60 Gnomegirl60
Edition: Professional
I bought this unit back in August '23 but didn't try it out until February '24. It was very easy to set up and worked flawlessly through the first run (4 days) with the coarse grit. After that run, using the supplied rocks and grit, the rocks had lost their sharp edges - very pretty at that point in the process. Yes, the machine is noisy but it's tumbling rocks around in a rubber barrel. Much quieter than the tiny, metal paint can that came with the tumbler that I had when I was a kid. I followed the instructions to clean the contents, load up the 2nd grit and water and set the timer for 5 days. After the first day, the motor shut off and "Er" was displayed. I tried the steps suggested (unplug, replug; remove 1/2 the contents, etc) but no joy. I tried multiple iterations over 3 days. In desperation, I contacted customer service via email, with very low expectations. Well, to my shock, Candi answered me in less than an hour! After just a couple of emails, we decided that the unit was beyond help but Candi explained that there was a warranty and sent me several courses of action, any of which were perfectly fine. I'm looking forward to completing my project with my new tumbler when it arrives, thanks to amazing customer service!
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Reviewed in the United States on February 13, 2024 by JJ