NATIONAL GEOGRAPHIC Starter Rock Tumbler Kit - Durable Leak-Proof Rock Polisher for Kids - Complete Rock Tumbling Kit - Geology Hobby Science Kit, Rocks and Crystals for Kids, A Great STEM Activity
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|Special Feature||Leak Proof|
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- 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 ½ 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.
- SATISFACTION GUARANTEED – The National Geographic STEM series provides kids high-quality educational toys that are a whole lot of fun! If your experience is anything less than extraordinary, let us know so we can make it right for you.
From the brand
National Geographic Starter Rock Tumbler Kit
Dive into the exciting hobby of rock tumbling with this complete starter kit that includes a tumbler, ½ pound of rough rocks with 9 types of gems, 5 jewelry fastenings & 4-stage rock polishing grit.
Kick off a fun new hobby with the National Geographic Starter Rock Tumbler Kit!
This kit has all the features and accessories you’ll need to transform rough rocks into extraordinary gemstones, start an awesome rock collection, and create beautiful jewelry.
This high-quality tumbling machine boasts a powerful motor that will last for years, as well as an upgraded leak-proof, rubber-lined barrel. Plus, everything is included to get started: a 1/2 pound of assorted stones from around the world, 4 stages of polishing media, and five jewelry fastenings to you can create your own unique wearables with your tumbled gems.
This high-quality beginner tumbler makes rock tumbling easy for kids and adults, with detailed, easy-to-follow instructions that will have you successfully tumbling in no time!
The rough rocks provided (½ lb.) contain nine different gemstones from around the world, and our tumbling grit is labeled by tumbling stage to make the process even easier! Choose your favorite gems and turn them into jewelry with the included necklace, key chain, ring, and two clip-on earring fastenings inside.
This is a great way to inspire a love of a hobby that can last a lifetime! Plus, kids are astounded by the transformation they'll see once rocks are fully polished! It's also a fantastic STEM toy thanks to the detailed Learning Guide, where kids can learn how rocks are smoothed and polished over time in nature. They'll also discover fascinating facts about all the gemstones in the kit!
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.
High-Quality Rock Tumblers for Every Level of Tumbling Enthusiast!
Starter Rock Tumbler Kit
Hobby Rock Tumbler Kit
Professional Rock Tumbler Kit
Plug in to Tumble
7-day Programmable Timer
Speed Control and Programmable Timer
Rough Gemstones Included
1/2 lb. Rocks
Rough Gemstones Included
1/2 lb. Rocks
Rough Gemstones Included
3 lb. Rocks
Patented GemFoam included for a shinier finish.
choking hazard - small parts - not suitable for children under 3 years
Reviews with images
Top reviews from the United States
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I'll address the biggest issue people have with this Tumbler; The lid becomes increasingly harder to take off and put on. I, someone who had strength trained most of his life, had a difficult time opening and closing the lid after a while of using it. I do have a solution though.
Nat Geo tells you to wash and dry the barrel and rubber lining inside it after every use, well, what happens when you're trying to push two pieces of dry rubber against each other? Yeah, it won't go so well. They stick and won't move. That's what's happening when the rubber of the barrel and the rubber gasket in the lid meet, not allowing you to turn and close. I realized that all it would need to work is to use a little oil. I took a Q-Tip, dabbed it in a little olive oil and just run it around where the lid gasket meets the rubbing barrel lining. Works like a charm! Even a meak child could open and close it after the oil. I would though recommend using something else in place of olive oil since after a while, it will start to rot and smell. I'd use a really light machine oil and use just enough to soak the tip of the Q-Tip.
Interlude: I would also recommend taking the entire rubber barrel lining out, cleaning it and the inside of the plastic barrel. A lot of the time, grit and water gets in there and can cause bubbles in the rubber lining or the grit may harden and cause irregular weight on the barrel keeping your rocks from tumbling correctly.
Last thing I want to go over is the lack of shine on your rocks. Nat Geo gives you grit for each stage of tumbling, grits one through three are decent but the "polish" is garbage. Their grits are pretty standard, all are Silicon Carbide, Stage One is 60/90#, Stage Two is 120/220# and Stage Three is 600#. All of those are fine and dandy but the "polish" is 1200# Silicon Carbide which will not get your rocks to have a luster. What you want is 1200# Aluminum Oxide. You can get a healthy amount from places like Kingsley North, Rock Tumbling dot com (yeah, I wrote dot come), The Rock Shed or Polly Plastics.
You'll want to do two tablespoons of each grit per pound of rock plus media (if you use it) and tumble them for five to seven days. You should get a nice shine on your rocks after all that.
When opening your container it only takes a slight twist and pops off. We struggled trying to twist off the lid.
Use all the rocks provided. Since you only get one bag of grit I suggest you tumble all the rocks they give you.
I didn't get to see it firsthand, just by the picture. I did read about it. So, it looks ok for me to start with.
Reviewed in the United States 🇺🇸 on December 21, 2022
Top reviews from other countries
Update: 03.10.2018 - BROKEN - Had to return it!
The tumbler comes with a good amount of raw rocks in the set but it does not really say how many of them to put inside the barrel in one go. We have added half of the rocks but then realized there is only one sachet of each type of the grit. Therefore once we're finished with each of the grits we have strained them through coffee filter papers and dried them out on the heater to save them for the second batch of the stones.
It would be really useful if the set was coming with more grit or at least for it to be available separately to top-up. There are National Geographic tumbler refill packs that come with the grit but there are only two types of refills (gemstones or jaspers mix), and once you have all of the stones you want just grit alone, not the same rocks.
Keep in mind that the tumbling may take weeks, it took us 3 full days for the first grit to lose all the rough edges, 3-4 days for grit #2 and then 5 days for grit #3 and lastly another 5-6 days for the last fine grit. It all depends on the effect you want to achieve and the type of rocks, harder stones like the hematite take longer than rose quartz for instance.
Nevertheless, this is a great set, comes with everything needed to start tumbling the stones, there are even strainer and some jewelry findings included in the set to make use of the stones. Recommended.
there are are four forms of grit supplied for the first experiment, Course, Medium, Fine and polish, I am currently on stage two Medium, I was surprised even after stage one how smooth and shiny the stones and crystal are, I am looking forward to seeing the final result in about ten days time.