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National Geographic

National Geographic Hobby Rock Tumbler Bundle for Kids and Adults

Based on 2,328 reviews
Condition: New
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$74.98

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Oct 28 – Oct 29
Order within 17 hours and 26 minutes

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At a glance

Condition
New
Style
Hobby Kit with 2 lb. Rocks
Dimensions
17.52 x 6.5 x 8.66 in
Weight
8 lb
Material
Plastic,Rubber
Age Range Description
8 years and up
Educational Objective
STEM
In the box
Rock Tumbler2 Packs Gemstones

Features 5

  • 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.
  • BUILT 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. Makes an excellent STEM gift or activity for girls and boys!
  • EVERYTHING INCLUDED - Tumbler, 4 polishing grits, sifter, Learning Guide, rough gemstones, PLUS 2 one-pound refill packs of rough gems and jasper stones.
  • 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, so you can set it and forget it. This is a great gift for kids!

Description

Your purchase has purpose! Every purchase helps support the global nonprofit National Geographic Society in its work to protect and illuminate our world through exploration, research, and education. Start your new rock tumbling hobby with the National Geographic Hobby Rock Tumbler Bundle! In addition to a high-quality tumbler, this kit includes four polishing grits, sifter, and two refill packs with one pound each of rough gemstones and rough jasper! Get started with the exciting hobby of rock tumbling with the National Geographic Hobby Rock Tumbler Bundle! This set includes everything you need in addition to a high-quality tumbler, including two rough gemstone refill packs (Jasper Mix and Variety). Rock tumbling is tons of fun and a great way to start an extraordinary rock collection. Kids can use the included jewelry fastenings to create beautiful homemade jewelry! This high-quality tumbling machine boasts a powerful motor that will last for years; an automatic shutoff timer; and a noise-reducing, leak-proof barrel with stainless steel lid. Plus, everything is included to get started: a 1/2 pound of assorted stones from around the world, 4 stages of polishing media, and jewelry fastenings to you can create your own unique wearables with your tumbled gems. We also include two refill packs, each with one pound of raw stones for tumbling (jasper and gemstone varieties). Rock tumbling is a fun activity for children of all ages and promotes an interest in geology and science. Introduce your kid to science the fun way, and join National Geographic as we inspire future generations by showing them the wonders of the natural world. Order today! 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.

Specs 22

Brand Name National Geographic
Age Range Description 8 years and up
Educational Objective STEM
Sub Brand National Geographic
Set Name Hobby Rock Tumbler Kit
Number of Packs 4
Number of Items 1
Unit Count 1 Count

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 28 – Oct 29

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

Awesome Nat Geo Customer service!!
Style: Hobby Kit with 2 lbs. Rocks
This was a great gift for our daughter. She loved it and and has gotten a lot of use from it. Recently it stopped working ( quit suddenly during cycles and all day lights flashing simultaneously) and I did some research to see if it was something I could fix. Found out there were some others that had the same issue. Some said it was the belt needing replaced or it was overloaded. We addressed these and the issue continued. Ended up reaching out to Nat Geo and explained the issue. They were amazing. The ended up replacing the unit for us and got my daughter tumbling again. Nat Geo products are a go to for us on birthdays and such for the fun and educational aspects they provide, along with the great family time and memories they have created. The customer service received will keep us buying their products! Thanks Nat Geo! ... show more
Reviewed in the United States on August 23, 2023 by Jonnae Ramos
Great for beginners
Style: Hobby Kit with 2 lbs. Rocks
I have never done rock tumbling before but became interested when I found some quartz at my mother's house. She lives outside Marble Falls, Texas. I shopped around quite a bit and based off reviews alone, this was the best machine for beginners and for the price. I initially bought the one available at my local Hobby Lobby and it would leak a little water and get the belt wet. The belt system used runner teeth and after just one day of use the belt was no good and the machine would not run. With this brand the belt is smooth and operates based off tension just like the pullies in your car. The rubber barrel helps eliminate most noises. The motor is quiet, the only noise is from the machine is it vibrating on a solid surface. Mine walks a little, so make sure you have it on a level surface. I waited to do my review until I had used the machine a while. I have done two separate rounds with it. Everything runs great still after more than 2 months of continuous use. I can see that the belt will wear out before anything else. There are little flecks of the belt around the area the machine sits in. I believe there is some plastic on the pullies that may be wearing on it. It does come with an extra belt though. I am currently tumbling Tiger's Eye rocks. The pack comes with a variety of rock types. I am tumbling like rocks together just to make sure everything wears at the same rate. My only real complaint is that in all the rock packs, the amount of amethyst is rediculos. I was provided some, but the pieces were so small that they would be destroyed if tumbled. There are also too many dalmatian jasper stones compared with how many of any other stone there is. Overall I am content with how well it works. ... show more
Reviewed in the United States on June 15, 2021 by Hephzibah
Fun for kids
Style: Hobby Kit with 2 lbs. Rocks
This is really an incredible kit. The process takes time, but the end product is worth it. My kids loved watching the rocks change over time. The tumbler can be loud - we live in a small space so we heard it running. We polised the final rocks with some mineral oil to get a real shine.
Reviewed in the United States on May 14, 2026 by Amazon Customer
Stem learning for KIDS. Small barrel, and is loud.
Style: Hobby Kit with 2 lbs. Rocks
Update. Quit working just flashes lights. Good for small kids. Not good for someone wanting to tumble a large amount of stone. Comes with one small grit pack for stones it comes with and one in each pound of rocks. The rocks are crap. U get very little agate I got no amethyst, some pale amazonite, and the rest is various jasper. Oh did get a large chunk of sodalite that wont fit in tumbler. Tum let is NOISY!!! And it does take about 2 weeks to tumble stones so I advise u put it in the garage. Unless your in a cold climate because u must use water and grit to tumble stone. Also the jewelry it comes with, well all I can use are the cord for necklace.. u get 3 jewelry" kits" in this package. I can use the stone cages from the necklace and key chain, the earrings are clip ons that require an epoxy glue and same with the tiny adjustable ring. Honestly would have saved money buying a tumbler and bulk grit separate. All of this can also be found on wish. Just because it's a nat geo product doesn't make it better. The drum is all rubber with a stainless cap, and u get the base, plug, and an extra "belt" that's hidden under the cap. There are rocks in a bag inside the tumbler when u get it. None of jewelery quality. Lot of nice tigers eye chunks but u can buy that cheaper here or wish. If I wasnt a prime member and had to pay shipping.. this is 7+ pounds.. I would have not gotten it. It will work for now because ups was 3 days late from a snow storm. I'm starting Into lapidary and jewelry making so I'm sure I will get a lapidary wheel and bench as I improve. All jewelry findings can be found on amazon. ... show more
Reviewed in the United States on December 18, 2020 by Mike n Glenna
I love this tumbler!
Style: Hobby Kit with 2 lbs. Rocks
It is a little noisy but what could be expected considering what it is. So far it’s been great! My rocks are breathtaking and they are not even half way done! So when they are I know it’s going to be extremely exciting!!! This tumbler does not require any of the stuff the older ones did like salt n such. It’s so much easier and it is so much fun to work with this tumbler! It comes with everything you will need to make your own treasures! Including some jewelry holding items to display your Beautiful Jems that this tumbler has produced! The instructions are very clear and the tumbler does not leak! I love this thing! I am looking forward to using this tumbler for many years to come! I give this product Two Thumbs up with a very satisfied Smile! ... show more
Reviewed in the United States on July 11, 2024 by Wendy Kathleen Nelson
Fun, Educational, and Easy to Use
Style: Hobby Kit with 2 lbs. Rocks
This rock tumbler kit is a lot of fun and very easy to use. Everything needed to get started is included, and the instructions are clear and simple to follow. It’s a great hands-on activity and feels well made. Perfect for hobbyists, kids, or anyone interested in rocks and geology.
Reviewed in the United States on February 1, 2026 by Alaen DIaz
Wonderful Activity/craft
Style: Hobby Kit with 2 lbs. Rocks
I bought this for my grandson’s 9th birthday. It is a wonderful, quality gift. Everything you need to run a couple of cycles and make a few items is included. Once he opened it and started the first batch of rocks we were all “into it”. The process and watching the rocks change is interesting. I do have a couple suggestions 1. There are multiple steps that take a few days each and the tumbler makes low constant noise while operating. We ended up putting it in the garage so it could run continuously to shorten time of each step. 2. If the user is a child, stay involved and encouraging so they do not lose interest waiting for the next step. We were and my grandson is just loving it and planning a jewelry business. Buying this gift was well worth the money and time involved. Hmm maybe I’ll get one for myself ... show more
Reviewed in the United States on January 27, 2024 by Delray68
Died just outside of the one year warranty
Style: Hobby Kit with 2 lbs. Rocks
Worked great until it didn’t. I bought this in August of 2024. My daughter used it for the two gem sets that came with it. We bought another National Geographic gem set and she started tumbling last month. The tumbler just quit halfway into the third grit cycle. The roller isn’t seized and the rubber band is fine. The motor just isn’t driving the pulley wheel. I reached out to National Geographic’s customer service team explaining what was going on and was told the following: “Based on the information you provided, it sounds like the motor may be failing. We recently updated the motors used in our tumblers; however, we do not sell replacement motors separately at this time. Additionally, your item is outside of our one-year warranty period, so we cannot offer a replacement. We recommend reaching out to a local hobby or specialty store, as they may be able to assist with troubleshooting or possible repairs. We appreciate your understanding and apologize for any inconvenience this may cause.” Maybe the new motors are better? I was unfortunate and got the one they’ve replaced. So know that at least in my experience I got an inferior machine that died not too long outside of the warranty period and there’s not much the company is willing to do to address that. I’ll look at a better machine for a replacement. ... show more
Reviewed in the United States on April 26, 2026 by Milton
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