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National Geographic Professional Rock Tumbler Kit – Extra Large 2 Lb. Barrel with 3-Speed Motor & 9-Day Timer – Geology DIY Kits for Adults, Rock Collection Hobby, Great Educational STEM Science Kit

    • Based on 4,079 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Nov 6
Order within 21 hours and 17 minutes
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Edition: Professional


Features

  • RUGGED, DURABLE DESIGN - The improved leak-proof barrel features a large 2-lb. capacity and an updated roller system to keep the barrel centered. Its also 75% quieter than most plastic barrels, thanks to a layer of tire rubber that absorbs sound.
  • ALL-IN-ONE TUMBLING KIT - In addition to the professional-grade, redesigned tumbler, you get 1 lb. of rough rocks (9 different types), 5 jewelry fastenings, tumbler grit, a large strainer, and our GemFoam rock polisher to get you started right away!
  • PRO-GRADE PERFORMANCE - A heavy-duty, 3-speed motor and programmable timer with day/hour settings deliver consistent results. The updated LED user interface lets you easily hone your settings for precise tumbling every time.
  • USE GEMFOAM FOR DAZZLING RESULTS - This rock tumbler kit stands apart from others by including our reusable, patented 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'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: 16.06 x 10.83 x 5.51 inches


Item Weight: 6.35 pounds


Country of Origin: China


Item model number: NGPROTUM5


Manufacturer recommended age: 8 years and up


Release date: February 26, 2024


Manufacturer: JMW Sales, Inc.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 6

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.

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Top Amazon Reviews

    • 7th birthday gift, works great! Need to buy more grit, USE GEM FOAM AT END!
Edition: Pro 3 with GemFoam
Review Image by Marby Marby
The process takes a while but is very rewarding! We found these rocks on a beach in Michigan. They were all pretty smooth already so we skipped to grit #2, then #3 then #4. After the #4 grit they were smooth but when they dried they still looked a little matte- not glossy shiny. We did 2 days with the gem foam blocks and water and WOW- they are so glossy and shiny! It’s loud-ish, but we put it in the basement and don’t notice or mind it. Holding up great after many uses, definitely buy more of the grit from Nat Geo, it comes in bottles. ... show more
Reviewed in the United States on July 16, 2024 by Marby Marby
    • Quiet, Easy to Use and Fun Little Rock Tumbler Kit!
Edition: Pro 3 with GemFoam
Review Image by Lena Boyce Lena Boyce
Review Image by Lena Boyce Lena Boyce
Review Image by Lena Boyce Lena Boyce
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! ... show more
Reviewed in the United States on November 9, 2023 by Lena Boyce Lena Boyce
    • Small & durable rock tumbler/polisher I got on sale for great price. Works well.
Edition: Professional
Review Image by MSmom MSmom
Review Image by MSmom MSmom
Review Image by MSmom MSmom
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. ... show more
Reviewed in the United States on August 10, 2023 by MSmom MSmom
    • Did not last long but National Geographic replaced it!
Edition: Pro 3 with GemFoam
This is the third National Geographic Rock tumbler that I have purchased. I have been very happy until now with its performance. I tumble rocks 24 hours a day, 7 days a week. This 2 pound tumbler has stood up to the challenge, lasting at least a year. That is, until this one. I purchased it in June, 2023. Today, August 31, 2023 I went to check on it because I didn't hear anything. There was an E showing on the screen. I unplugged it and then plugged it back in. Pressed start and NOTHING. Repeated several times and still nothing. I am very sorry it did not last longer and will be looking for a different tumbler. I would like to update this review. National Geographic contacted me about this review. It turns out that they have a one year guarantee on their tumblers. I have been happy with the results I get from this tumbler, just disappointed that this tumbler died so quickly after purchase. It has now been replaced by National Geographic. I am very happy with their prompt attention to this matter. ... show more
Reviewed in the United States on September 1, 2023 by jerbar

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