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Best Rock Polishers for Kids – 2020 Review & Buyer’s Guide

Best Rock Polishers for Kids

Kids love rock tumblers! They can provide hours of fun and hands-on project opportunities. If you’re interested in what some of the top kits have to offer, you’ll want to check out our review of 7 of the very best rock polishers for kids below. It includes what we think are the top rock tumbler kits that have been made with children in mind.

[Please note that we might share a small portion of the sales from the links on this page. We only share products that we truly love and recommend. Now on to the awesome rock tumbler kits for you.]

What are the Best Rock Polishers for Kids?

Here are Our 7 Top Recommended Rock Tumblers:

  1. NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit
  2. Discover with Dr. Cool Hobby Rock Tumbler
  3. Dan & Darci Advanced Professional Rock Tumbler Kit
  4. Smithsonian Rock Tumbler Kit
  5. Tumble-Bee Rotary Rock Tumbler
  6. NatureBound Starter Rock Tumbler Kit for Kids
  7. Discover with Dr. Cool PRO Series Rock Tumbler

1) NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit

Best Rock Polishers - National Geographic Hobby Rock Tumbler Kit

NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit. Click the photo to see the price on Amazon.

First on our list of rock polishers for kids is this excellent tumbler kit from National Geographic. This rock polishing kit comes with everything that kids need to clean their rocks and observe them in clarity. It features four polishing grits, a tumbler, a sifter, as well as nine different kinds of gemstones and a guide.

Children can read through the guide that’s included to learn more about rocks while having a fun hands-on experience. They’ve also provided a set of instructions that allows kids to have an easy time when it comes to learning how to use the tumbler set.

These instructions are simple to follow and children can use them to figure out how to use the kit on their own or with assistance if needed. We also liked how the tumbler itself is easy to operate.

It comes with functions that can be set with one touch. Furthermore, it has a feature that enables it to turn itself off due to the automatic timer. Some customers have expressed concerns about the durability of the tumbler due to the plastic parts rub against each other in motion.

The process of turning rocks into gemstones is also pretty straightforward and fun. It involves kids putting the rocks into the tumbler, followed by grit and water. They can then use the one-touch settings to tumble the rocks and wait for them to come out looking like gemstones.

Specifications of the NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit:

  • Weight: 5.51 lbs
  • Size: 11 x 9.3 x 7.5″
  • Age Recommendation: 8 years and up


2) Discover with Dr. Cool Hobby Rock Tumbler

Best Rock Polishers for Children - Discover with Dr. Cool Hobby Rock Tumbler Review

Discover with Dr. Cool Hobby Rock Tumbler. Click the photo to see the price on Amazon.

This Discover with Dr. Cool setcomes with all of the equipment that kids need to polish their rocks. They’re provided with ½ a pound of gemstones that include a variety of nine varying types for children to observe.

In addition to this, the set includes four grades of polishing grits, jewelry fastenings, a tumbler, barrel, and a set of instructions that kids can follow to start polishing their rocks. We also liked how a learning guide is available.

This gives children a great chance to learn more about rocks and gemstones while they’re in the process of polishing them. Users have also mentioned how they’ve been impressed by the barrel design.

Kids can operate the tumbler without the barrel causing too much noise. This is a result of how it has been made with rubber materials that keep the noise to a minimum. The lid has also been made with stainless-steel materials that improve the quietness and boost the barrel’s durability.

A timer has been included that has a programmable feature. Some people have mentioned that they have issues being able to operate this function. However, those who can use it properly find that it’s excellent for helping to save energy while preventing the rocks from being over-tumbled.

Specifications of the Discover with Dr. Cool Hobby Rock Tumbler:

  • Weight: 4.6 lbs
  • Size: 5.5 x 8 x 10.8″
  • Age Recommendation: 8-15 years


3) Dan & Darci Advanced Professional Rock Tumbler Kit

Best Rock Polishers Review - Discover with Dr. Cool Hobby Rock Tumbler

Dan & Darci Advanced Professional Rock Tumbler Kit. Click the photo to see the price on Amazon.

Next up on our review of rock polishers for kids is the Advanced Professional Rock Tumbler Kit - with Digital 9-day Polishing timer & 3 speed settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Gift for Kids all ages : Geology Toy.

We liked how this rock tumbler kit has a large capacity that allows children to put up to 1 lb of stones into the barrel. It’s great for letting you polish a higher quantity of rocks each time. The set comes with 4 packets of grits, ½ a pound of rocks, a mesh strainer, a storage bag, and jewelry fasteners.

In addition to this, a set of instructions is available that has been made with illustrations. As a result, kids can have an easier time when it comes to learning how to use the kit independently. A learning guide is also included which is great for providing children with an opportunity to strengthen their knowledge.

Customers have been pleased to discover how the barrel has been made with a design that prevents it from operating with too much noise. Not to mention, the motor that has been fitted is of a high standard to last your child for longer.

Some were disappointed with how the tumbler is smaller than they were expecting. However, with such a good selection of functions and controls, most people don’t find the smaller size to be an issue.

Specifications of the Dan & Darci Advanced Professional Rock Tumbler Kit:

  • Weight: 6.22 lbs
  • Size: 13 x 10 x 5.9″
  • Age Recommendation: 8 years and up


4)Smithsonian Rock Tumbler Kit

Best Rock Polishers Review - Smithsonian Rock Tumbler Kit

Smithsonian Rock Tumbler Kit. Click the photo to see the price on Amazon.

If you are interested in a complete set that kids can use to make gemstones and jewelry pieces, this tumbler kit by Smithsonian could be a great option. It features over 15 accessories that include key chains, rings, and bracelets.

Therefore, children can have a blast when it comes to getting creative and using the gemstones that they’ve made to design their jewelry pieces.

The kit comes with a total of 226g of stones, 18g of coarse grit, 29g of medium grit, 5ml of glue, and 23g of polish. There’s also a barrel with a lid that functions with a powerful and durable motor. A lid is also available to prevent any leaks.

Some people have mentioned that the set takes a while to polish stones. However, kids will have an easy time when it comes to polishing their rocks due to the awesome set of instructions that are included.

They’re simple to follow so that children can spend less time stuck on how to use the kit and more time having fun creating fantastic gemstones.

Specifications of the Smithsonian Rock Tumbler Kit:

  • Weight:3.7 lbs
  • Size: 16 x 16 x 13″
  • Age Recommendation: 14 years and up


5) Tumble-Bee Rotary Rock Tumbler

Best Rock Polishers for Kids Review - Tumble-Bee Rotary Rock Tumbler

Tumble-Bee Rotary Rock Tumbler. Click the photo to see the price on Amazon.

This tumbler by Tumble-Bee can polish stones, as well as metals and glass. Therefore, children have more functions available to use other than making gemstones. We were impressed with how the tumbler comes with a large capacity that allows for plenty of rocks to be tumbled at once.

The kit comes with an Allen wrench, a rubber barrel, and a set of instructions that are easy for children to follow. These instructions are available in written and visual forms to make it even simpler for children to use.

In addition to this, the AC motor that has been fitted has a fan cooling system. Therefore, it can prevent itself from overheating when tumbling a large number of rocks over a long duration of time.

The housing has been made to be free from sharp edges to keep children safe. Moreover, the housing has anti-rust features that are awesome for keeping the tumbler durable for longer.

Some were hoping the rocks that are included would be larger. However, many users have appreciated how the on/off switch is lighted to make it clear and easy to use.

Specifications of the Tumble-Bee Rotary Rock Tumbler:

  • Weight: 10 lbs
  • Size: 13 x 6 x 6″
  • Age Recommendation: 14 years and up

Check the Price of the Tumble-Bee Rotary Rock Tumbler on Amazon HERE


6) NatureBound Starter Rock Tumbler Kit for Kids

Best Rock Polishers Review - NatureBound Starter Rock Tumbler Kit for Kids

NatureBound Starter Rock Tumbler Kit for Kids. Click the photo to see the price on Amazon.

Those of you who are looking for a rock tumbler kit that’s fast will be pleased with this starter rock polisher kit from Naturebound. This kit has been made with a unique design that lets you have gemstones made within as little as one day.

You can also select a two or three-day option by using the buttons available on the front. The on/off button is also available on the front which makes it super easy for children to use.

The set also comes with everything that children need to start making their gemstones. There’s a power cord, rock tumbler, polishing powder, rocks, and jewelry pieces. As a result, kids can have a blast polishing gemstones and making them into jewelry.

Some customers have discussed how you have to let the stones dry properly before adding the polishing powder otherwise the powder gets stuck to the stones. Having said that, it’s a simple problem that can usually be avoided by letting the stones dry properly.

Users have mentioned how they’re happy with how the tumbler has a design that lets you tighten it securely. As a result, you don’t have to worry about it leaking.

Specifications of the NatureBound Starter Rock Tumbler Kit for Kids:

  • Weight:3.6 lbs
  • Size: 8 x 8 x 52″
  • Age Recommendation: 8-16 years


7) Discover with Dr. Cool PRO Series Rock Tumbler

Best Rock Polishers for Kids Review - Discover with Dr. Cool PRO Series

Discover with Dr. Cool PRO Series Rock Tumbler. Click the photo to see the price on Amazon.

Last but not least on our review of rock polishers for kids is the Discover with Dr. Cool PRO Series Rock Tumbler. Kids are provided with 1 lb of stones that have 9 different varieties which are great for enabling them to create gemstones that stand out from each other. The set also comes with fastenings for jewelry and 4 types of polishing grits which makes sure children have all they need to get started.

We also liked how the set of available instructions are simple to follow so that kids can get to making gemstones straight away. Furthermore, the motor that’s included has a durable design to last for longer.

The tumbler is louder than some would prefer. Therefore, you may want to operate somewhere in the house where it won’t disturb people.

An automatic shutoff timer function is included which is handy for allowing you to set a specific time that you want the rocks to be tumbled for. So, you don’t have to keep an eye on the tumbler. Instead, you can leave it to tumble the rocks and know that it will turn off by itself and save energy.

Specifications of the Discover with Dr. Cool PRO Series Rock Tumbler:

  • Weight: 5 lbs
  • Size: 6 x 9.2 x 2.2″
  • Age Recommendation: 8-15 years

Check the Price of the Discover with Dr. Cool PRO Series Rock Tumbler on Amazon HERE


What’s Your Favorite Rock Polisher for Kids?

After reading through our review of some of the best rock polishers for kids, you can have an easier time making a final decision on the one that’s best for your child. Feel free to leave other suggestions on rock polishers that you think are great recommendations!

Here are links to the rock tumblers we feature here as well as some others on Amazon. Also be sure to also check out our list of the best chemistry kits for kids.


Written by Moneywise Teacher Staff

This post was written by an awesome member of the Moneywise Teacher writing staff!

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