Search  for anything...
Blue Marble

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)

    • Based on 10,379 reviews
Condition: New
Checking for product changes
$39.99 Why this price?

Buy Now, Pay Later

As low as $9 / mo
  • – 4-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, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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 Monday, Dec 30
Order within 3 hours and 41 minutes
Available payment plans shown during checkout

Features

  • 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 12 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!

Theme: science


Item Weight: 4 Pounds


Size: 1 Count (Pack of 1)


Item Dimensions: 11 x 5.2 x 12 inches


Global Trade Identification Number: 91


Sub Brand: National Geographic


UPC: 816448020391 085422266029


Educational Objective: STEM


Age Range Description: Kid


Brand Name: Blue Marble


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Dec 30

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

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • So much fun for kids AND adults
Review Image by Vicki M Vicki M
My husband brought up a fun activity for us to share with our grand kids who are 5 and 3. We found this National Geographic tumbler and bought the kit. We were so surprised at how well made it was and the sharp rocks they included along with a strainer, easy-to-follow instructions as well as information about the rocks included with the kit. We jumped in, adding grit #1, with water just to cover, plugged it in and let 'er rip for a week. The next week, we opened the lid to find smoother, prettier rocks. We continued this for several weeks and each time the rocks became smoother and more glossy. We were excited to learn that we can buy different kinds of rocks (agates, precious stones, and more), use rocks from our yard, and order additional grit to keep the experiments going. We can even make cool jewelry. Our grand kids look forward to coming over and seeing how the rocks are doing. ... show more
Reviewed in the United States on July 5, 2024 by Vicki M Vicki M
    • Son loves it but its loud and takes a long time
I bought this for a 9 year old going through a geology phase. This is a well made product like most stuff with the NatGeo logo (some of their robots are another thing however). It does exactly what is expected and comes with a nice selection of rocks. It is very loud. Put it somewhere you won't be bothered by noise. A lot of noise. Couple that with the time it takes, 3 to 4 weeks for all 4 cycles or more. If you don't like noise or your child doesn't have patience, this is not the product for you. If your child can wait, and you can tolerate the noise, then it's great. My son really likes when we open it after each of the phases and he can see the progress. ... show more
Reviewed in the United States on November 13, 2022 by Jeffrey Ellis
    • Really fun and great for kids of all ages!
Review Image by mapagill mapagill
Review Image by mapagill mapagill
Review Image by mapagill mapagill
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! ... show more
Reviewed in the United States on July 4, 2023 by mapagill mapagill
    • Rock tumber
Amazing
Reviewed in the United States on November 6, 2024 by Joann Abernathy
    • You must have patience.This takes a couple weeks, but it's worth it.
Review Image by tammy tammy
Review Image by tammy tammy
I bought this from my grandson because he loves things like this. It does take quite a long time from start to finish, but it's definitely worth it. Just be patient. The end results are incredible.He was so excited and happy, highly recommend.
Reviewed in the United States on August 8, 2024 by tammy tammy
    • Neat and fun to do, but SO NOISY
Our first rock tumbler. at this time, I've only done the rocks that the set came with and used all the grit provided. I have to purchase more grit before I can do rocks that we have personally collected. I am waiting though. Why? Because this thing sounds like a rainstorm in my garage. Yes, I had to keep it in my garage because of the noise level. It is so loud. That is a bummer. Also, it's showing wear and tear already and I have literally ONLY done the rocks it came with. By the time I got to grit 2, I noticed bubbles in the inner liner. When I'd clean it out after a tumble, I'd push the nasty grit mud out of the bubbles and next time, there'd be another bubble in a different location. I've only had it 2-3 months, so I hope this is not indicative of the lifespan of the tumbler. Once that liner starts cracking or breaking, it will no longer function well. Hopefully, the bubbles will not escalate into anything else. Finally, the lid gets harder and harder to remove with time. The first two grits, I could remove it by hand. For grit 3, I had to get my strong teen son to do it...By grit 4, he had to use a jar opener and barely got it open. we try to clean it well between tumbles to ensure no gunky mud build up is present, but that made no difference in our ability to open the container. Pros: Great start up kit for the price, with several good items included; Seemed to accomplish it's purpose of prettying up the rocks. Cons. THE NOISE. IT IS LOUD. Wear and tear on kit after just a couple tumbles and increasing difficulty with opening lid. I won't buy this particular model again...but I would still recommend it to others for a first time tumbler. My kiddos love what it can do and loved the final product. ... show more
Reviewed in the United States on October 31, 2020 by Angelsmom
    • kids need help
fast shipping, easy direction, this was great idea for child that loves rocks, but not easy to open drum after using... because of days suggested the noise level is loud, sounds like down pour of rain. we moved it into another room with door shut. only 1 set of the mineral packets comes with this unit, will have to order more to finish the stone collection that was inculcated. ... show more
Reviewed in the United States on June 23, 2023 by Deb DeTurck

Can't find a product?

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